id stringlengths 39 57 | schema_version stringclasses 1
value | provenance dict | scope unknown | observation dict | annotation_target dict | target_trace dict | eval_metadata dict | split stringclasses 2
values |
|---|---|---|---|---|---|---|---|---|
bach-prelude-c-major-bwv846:m001-004:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in C Major, BWV 846 (Well-Tempered Clavier)",
"composer": "Johann Sebastian Bach",
"composition_year": 1722,
"composition_pd_status_us": "public_doma... | {
"song_id": "bach-prelude-c-major-bwv846",
"phrase_window": "measures 1-4",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 74,
"time_signature": "4/4",
"window_role": "prompt",
"continuation_target_window": [
5,
8
],
"musical_phrase_label": "opening four-chord cycle",
"natural_phra... | {
"midi_sidecar": {
"midi_sha256": "107f2b6a298f283f8d26d4e8359669e7780f7ea64011b7844f2ed066d874a37e",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 0.001689,
"t_ticks": 1,
"dur_seconds": 1.621622,
"dur_ticks": 960,
"note": 60,
"name": "C4",
... | {
"measure_range": [
1,
4
],
"structure": "Opening arpeggiated pattern — four-measure harmonic template establishing the prelude's texture (C – Dm7/C – G7/B – C)",
"key_moments": [
"m1 C major arpeggio — tonic statement (C-E-G pattern)",
"m2 Dm7 over the C bass — the prelude's first gentle disso... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 1–4 of the Bach C Major Prelude, view the piano roll, analyze the arpeggiated harmonic pattern, play the phrase in a loop, then produce a phrase annotation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Read measure... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
bach-prelude-c-major-bwv846:m005-008:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in C Major, BWV 846 (Well-Tempered Clavier)",
"composer": "Johann Sebastian Bach",
"composition_year": 1722,
"composition_pd_status_us": "public_doma... | {
"song_id": "bach-prelude-c-major-bwv846",
"phrase_window": "measures 5-8",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 74,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "consequent four-chord cycle",
"natural_phrase_boundary": true,
"paired_prompt... | {
"midi_sidecar": {
"midi_sha256": "107f2b6a298f283f8d26d4e8359669e7780f7ea64011b7844f2ed066d874a37e",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 12.974662,
"t_ticks": 7681,
"dur_seconds": 1.621622,
"dur_ticks": 960,
"note": 60,
"name": "C... | {
"measure_range": [
5,
8
],
"structure": "Consequent arpeggiated unit — Am/C, D7/C, G/B, Cmaj7/B: leaning toward the dominant over a nearly static bass",
"key_moments": [
"m5 A minor over the C bass — relative-minor color",
"m6 D7 over C — the first accidental of the piece (F#), pulling toward ... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 5–8 of Prelude in C Major, BWV 846 (Well-Tempered Clavier) (continuation of mm. 1–4), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Now play measures 5–8 and explain... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
bach-prelude-c-major-bwv846:m009-012:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in C Major, BWV 846 (Well-Tempered Clavier)",
"composer": "Johann Sebastian Bach",
"composition_year": 1722,
"composition_pd_status_us": "public_doma... | {
"song_id": "bach-prelude-c-major-bwv846",
"phrase_window": "measures 9-12",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 74,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "second cycle — to the dominant",
"natural_phrase_boundary": true,
"continuation_target_wi... | {
"midi_sidecar": {
"midi_sha256": "107f2b6a298f283f8d26d4e8359669e7780f7ea64011b7844f2ed066d874a37e",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 25.947635,
"t_ticks": 15361,
"dur_seconds": 1.621622,
"dur_ticks": 960,
"note": 57,
"name": "... | {
"measure_range": [
9,
12
],
"structure": "Second cycle — ii–V–I into the dominant key (Am7 – D7 – G) with a diminished-seventh shade at m12",
"key_moments": [
"m9 A minor seventh — pivot away from C",
"m10 D7 — dominant of G, the strongest pull away from home so far",
"m11 G major — arriva... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 9–12 of Prelude in C Major, BWV 846 (Well-Tempered Clavier), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 9–12... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
bach-prelude-c-major-bwv846:m013-016:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in C Major, BWV 846 (Well-Tempered Clavier)",
"composer": "Johann Sebastian Bach",
"composition_year": 1722,
"composition_pd_status_us": "public_doma... | {
"song_id": "bach-prelude-c-major-bwv846",
"phrase_window": "measures 13-16",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 74,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "second cycle — first-inversion descent home",
"natural_phrase_boundary": true... | {
"midi_sidecar": {
"midi_sha256": "107f2b6a298f283f8d26d4e8359669e7780f7ea64011b7844f2ed066d874a37e",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 38.920608,
"t_ticks": 23041,
"dur_seconds": 1.621622,
"dur_ticks": 960,
"note": 53,
"name": "... | {
"measure_range": [
13,
16
],
"structure": "First-inversion descent — Dm/F, dim7 over F, C/E, Fmaj7/E above a stepwise falling bass",
"key_moments": [
"m13 D minor over F — the walk home begins",
"m14 diminished seventh over the same F bass — passing tension",
"m15 C major over E — tonic co... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 13–16 of Prelude in C Major, BWV 846 (Well-Tempered Clavier) (continuation of mm. 9–12), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Now play measures 13–16 and de... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
bach-prelude-c-major-bwv846:m017-020:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in C Major, BWV 846 (Well-Tempered Clavier)",
"composer": "Johann Sebastian Bach",
"composition_year": 1722,
"composition_pd_status_us": "public_doma... | {
"song_id": "bach-prelude-c-major-bwv846",
"phrase_window": "measures 17-20",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 74,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "third cycle — tonic return antecedent",
"natural_phrase_boundary": true,
"continuation_t... | {
"midi_sidecar": {
"midi_sha256": "107f2b6a298f283f8d26d4e8359669e7780f7ea64011b7844f2ed066d874a37e",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 51.893581,
"t_ticks": 30721,
"dur_seconds": 1.621622,
"dur_ticks": 960,
"note": 50,
"name": "... | {
"measure_range": [
17,
20
],
"structure": "Cadence home and pivot — ii–V–I in C (Dm7 – G7 – C), then C7 turns toward the subdominant",
"key_moments": [
"m17 D minor seventh — the approach home begins",
"m18 G7 — the dominant",
"m19 C major — cadence home",
"m20 C7 — a Bb appears, point... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 17–20 of Prelude in C Major, BWV 846 (Well-Tempered Clavier), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 17–... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
bach-prelude-c-major-bwv846:m021-024:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in C Major, BWV 846 (Well-Tempered Clavier)",
"composer": "Johann Sebastian Bach",
"composition_year": 1722,
"composition_pd_status_us": "public_doma... | {
"song_id": "bach-prelude-c-major-bwv846",
"phrase_window": "measures 21-24",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 74,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "third cycle — consequent with chromatic motion",
"natural_phrase_boundary": t... | {
"midi_sidecar": {
"midi_sha256": "107f2b6a298f283f8d26d4e8359669e7780f7ea64011b7844f2ed066d874a37e",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 64.866554,
"t_ticks": 38401,
"dur_seconds": 1.621622,
"dur_ticks": 960,
"note": 41,
"name": "... | {
"measure_range": [
21,
24
],
"structure": "Chromatic ascent onto the dominant pedal — Fmaj7, F#dim7, dim7 over Ab, then G7 with the bass pedal starting at m24",
"key_moments": [
"m21 F major seventh — subdominant station",
"m22 F# diminished seventh — the bass starts rising",
"m23 diminish... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 21–24 of Prelude in C Major, BWV 846 (Well-Tempered Clavier) (continuation of mm. 17–20), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 21–24 and descr... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
bach-prelude-c-major-bwv846:m025-028:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in C Major, BWV 846 (Well-Tempered Clavier)",
"composer": "Johann Sebastian Bach",
"composition_year": 1722,
"composition_pd_status_us": "public_doma... | {
"song_id": "bach-prelude-c-major-bwv846",
"phrase_window": "measures 25-28",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 74,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "dominant pedal — antecedent",
"natural_phrase_boundary": true,
"continuation_target_wind... | {
"midi_sidecar": {
"midi_sha256": "107f2b6a298f283f8d26d4e8359669e7780f7ea64011b7844f2ed066d874a37e",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 77.839527,
"t_ticks": 46081,
"dur_seconds": 1.621622,
"dur_ticks": 960,
"note": 43,
"name": "... | {
"measure_range": [
25,
28
],
"structure": "Dominant pedal core — bass G held (since m24) under alternating C/G, G7sus, G7, and diminished-seventh harmonies",
"key_moments": [
"m25 C major over the G pedal — consonance suspended over tension",
"m26 suspended G7 — the alternation pattern",
"... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 25–28 of Prelude in C Major, BWV 846 (Well-Tempered Clavier), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 25–... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
bach-prelude-c-major-bwv846:m029-032:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in C Major, BWV 846 (Well-Tempered Clavier)",
"composer": "Johann Sebastian Bach",
"composition_year": 1722,
"composition_pd_status_us": "public_doma... | {
"song_id": "bach-prelude-c-major-bwv846",
"phrase_window": "measures 29-32",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 74,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "dominant pedal resolves — consequent",
"natural_phrase_boundary": true,
"pa... | {
"midi_sidecar": {
"midi_sha256": "107f2b6a298f283f8d26d4e8359669e7780f7ea64011b7844f2ed066d874a37e",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 90.8125,
"t_ticks": 53761,
"dur_seconds": 1.621622,
"dur_ticks": 960,
"note": 43,
"name": "G2... | {
"measure_range": [
29,
32
],
"structure": "Pedal resolution — three last bars over G (C/G, G7sus, G7), then the bass lands on low C at m32 (heard as C7)",
"key_moments": [
"m29 C major over the G pedal — the alternation continues",
"m31 G7 — the pedal's final bar",
"m32 the bass drops to l... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 29–32 of Prelude in C Major, BWV 846 (Well-Tempered Clavier) (continuation of mm. 25–28), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 29–32 and descr... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
bach-prelude-c-major-bwv846:m033-036:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in C Major, BWV 846 (Well-Tempered Clavier)",
"composer": "Johann Sebastian Bach",
"composition_year": 1722,
"composition_pd_status_us": "public_doma... | {
"song_id": "bach-prelude-c-major-bwv846",
"phrase_window": "measures 33-36",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 74,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "prelude close into fugue opening — antecedent",
"natural_phrase_boundary": true,
"contin... | {
"midi_sidecar": {
"midi_sha256": "107f2b6a298f283f8d26d4e8359669e7780f7ea64011b7844f2ed066d874a37e",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 103.785473,
"t_ticks": 61441,
"dur_seconds": 3.243243,
"dur_ticks": 1920,
"note": 36,
"name":... | {
"measure_range": [
33,
36
],
"structure": "Movement seam — the prelude's coda over a tonic C pedal (mm. 33-35), then the fugue subject alone in the alto (m36)",
"key_moments": [
"m33 low C octave pedal with subdominant color (F-A, joined by D) above",
"m34 G7 sweep over the same C bass",
"... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 33–36 of Prelude in C Major, BWV 846 (Well-Tempered Clavier), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 33–... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
bach-prelude-c-major-bwv846:m037-040:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in C Major, BWV 846 (Well-Tempered Clavier)",
"composer": "Johann Sebastian Bach",
"composition_year": 1722,
"composition_pd_status_us": "public_doma... | {
"song_id": "bach-prelude-c-major-bwv846",
"phrase_window": "measures 37-40",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 74,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "fugue exposition — continuation",
"natural_phrase_boundary": true,
"paired_... | {
"midi_sidecar": {
"midi_sha256": "107f2b6a298f283f8d26d4e8359669e7780f7ea64011b7844f2ed066d874a37e",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 116.756757,
"t_ticks": 69120,
"dur_seconds": 0.371622,
"dur_ticks": 220,
"note": 62,
"name": ... | {
"measure_range": [
37,
40
],
"structure": "Fugue exposition — entries stack the texture from two voices to four (soprano answer m37, tenor m39, bass m40)",
"key_moments": [
"m37 soprano answer at the dominant (subject shape starting on G)",
"m39 tenor entry on G, an octave below the soprano's ... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 37–40 of Prelude in C Major, BWV 846 (Well-Tempered Clavier) (continuation of mm. 33–36), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 37–40 and descr... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
bach-prelude-c-major-bwv846:m041-044:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in C Major, BWV 846 (Well-Tempered Clavier)",
"composer": "Johann Sebastian Bach",
"composition_year": 1722,
"composition_pd_status_us": "public_doma... | {
"song_id": "bach-prelude-c-major-bwv846",
"phrase_window": "measures 41-44",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 74,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "post-exposition strettos — antecedent",
"natural_phrase_boundary": true,
"continuation_t... | {
"midi_sidecar": {
"midi_sha256": "107f2b6a298f283f8d26d4e8359669e7780f7ea64011b7844f2ed066d874a37e",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 129.72973,
"t_ticks": 76800,
"dur_seconds": 0.608108,
"dur_ticks": 360,
"note": 53,
"name": "... | {
"measure_range": [
41,
44
],
"structure": "Post-exposition strettos — overlapping subject entries begin at once (soprano + tenor m42, alto m44)",
"key_moments": [
"m42 stretto: soprano and tenor state the subject one beat apart",
"m43 passing C# and Bb — a brief D minor shade",
"m44 alto e... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 41–44 of Prelude in C Major, BWV 846 (Well-Tempered Clavier), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 41–... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
bach-prelude-c-major-bwv846:m045-048:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in C Major, BWV 846 (Well-Tempered Clavier)",
"composer": "Johann Sebastian Bach",
"composition_year": 1722,
"composition_pd_status_us": "public_doma... | {
"song_id": "bach-prelude-c-major-bwv846",
"phrase_window": "measures 45-48",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 74,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "stretto chain — consequent",
"natural_phrase_boundary": true,
"paired_promp... | {
"midi_sidecar": {
"midi_sha256": "107f2b6a298f283f8d26d4e8359669e7780f7ea64011b7844f2ed066d874a37e",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 142.702703,
"t_ticks": 84480,
"dur_seconds": 0.152027,
"dur_ticks": 90,
"note": 60,
"name": "... | {
"measure_range": [
45,
48
],
"structure": "Stretto chain continues — bass entry echoed within a beat (m45); A minor coloration (G#) through mm. 46-48",
"key_moments": [
"m45 bass subject entry, echoed a beat later by the alto starting on D",
"m46 G# appears — leaning toward A minor",
"m47 ... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 45–48 of Prelude in C Major, BWV 846 (Well-Tempered Clavier) (continuation of mm. 41–44), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 45–48 and descr... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
bach-prelude-c-major-bwv846:m049-052:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in C Major, BWV 846 (Well-Tempered Clavier)",
"composer": "Johann Sebastian Bach",
"composition_year": 1722,
"composition_pd_status_us": "public_doma... | {
"song_id": "bach-prelude-c-major-bwv846",
"phrase_window": "measures 49-52",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 74,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "climactic strettos — antecedent",
"natural_phrase_boundary": true,
"continuation_target_... | {
"midi_sidecar": {
"midi_sha256": "107f2b6a298f283f8d26d4e8359669e7780f7ea64011b7844f2ed066d874a37e",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 155.675676,
"t_ticks": 92160,
"dur_seconds": 0.810811,
"dur_ticks": 480,
"note": 45,
"name": ... | {
"measure_range": [
49,
52
],
"structure": "Climactic stretto region — five subject statements within mm. 49-51 across all four voices",
"key_moments": [
"m49 alto and tenor entries one beat apart",
"m50 bass entry joins the pile-up",
"m51 soprano and alto overlap while G#, Bb, and F# mix i... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 49–52 of Prelude in C Major, BWV 846 (Well-Tempered Clavier), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 49–... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
bach-prelude-c-major-bwv846:m053-056:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in C Major, BWV 846 (Well-Tempered Clavier)",
"composer": "Johann Sebastian Bach",
"composition_year": 1722,
"composition_pd_status_us": "public_doma... | {
"song_id": "bach-prelude-c-major-bwv846",
"phrase_window": "measures 53-56",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 74,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "peak density — consequent",
"natural_phrase_boundary": true,
"paired_prompt... | {
"midi_sidecar": {
"midi_sha256": "107f2b6a298f283f8d26d4e8359669e7780f7ea64011b7844f2ed066d874a37e",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 168.648649,
"t_ticks": 99840,
"dur_seconds": 0.608108,
"dur_ticks": 360,
"note": 55,
"name": ... | {
"measure_range": [
53,
56
],
"structure": "Peak-density episode — sequences with D minor color (C#); the busiest bar of the piece at m53; late soprano entry m55",
"key_moments": [
"m53 forty note onsets — the busiest measure in the entire piece",
"m54 the sequence continues, still colored by C... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 53–56 of Prelude in C Major, BWV 846 (Well-Tempered Clavier) (continuation of mm. 49–52), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 53–56 and descr... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
bach-prelude-c-major-bwv846:m057-060:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in C Major, BWV 846 (Well-Tempered Clavier)",
"composer": "Johann Sebastian Bach",
"composition_year": 1722,
"composition_pd_status_us": "public_doma... | {
"song_id": "bach-prelude-c-major-bwv846",
"phrase_window": "measures 57-60",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 74,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "drive onto the tonic pedal — antecedent",
"natural_phrase_boundary": true,
"continuation... | {
"midi_sidecar": {
"midi_sha256": "107f2b6a298f283f8d26d4e8359669e7780f7ea64011b7844f2ed066d874a37e",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 181.621622,
"t_ticks": 107520,
"dur_seconds": 0.608108,
"dur_ticks": 360,
"note": 64,
"name":... | {
"measure_range": [
57,
60
],
"structure": "Final drive and tonic pedal — dominant arrival at the end of m58, low C pedal from m59 with the last subject entries above it",
"key_moments": [
"m58 the bass winds down to land on G — the fugue's last dominant",
"m59 a low C tonic pedal begins and ho... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 57–60 of Prelude in C Major, BWV 846 (Well-Tempered Clavier), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 57–... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
bach-prelude-c-major-bwv846:m061-062:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in C Major, BWV 846 (Well-Tempered Clavier)",
"composer": "Johann Sebastian Bach",
"composition_year": 1722,
"composition_pd_status_us": "public_doma... | {
"song_id": "bach-prelude-c-major-bwv846",
"phrase_window": "measures 61-62",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 74,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "coda over the tonic pedal — consequent",
"natural_phrase_boundary": true,
"... | {
"midi_sidecar": {
"midi_sha256": "107f2b6a298f283f8d26d4e8359669e7780f7ea64011b7844f2ed066d874a37e",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 194.594595,
"t_ticks": 115200,
"dur_seconds": 0.152027,
"dur_ticks": 90,
"note": 57,
"name": ... | {
"measure_range": [
61,
62
],
"structure": "Coda over the tonic pedal — B natural returns (m61), then a soprano octave run into the final wide-spaced C major chord (m62)",
"key_moments": [
"m61 B naturals replace the Bb color — the harmony turns for home",
"m62 a soprano sixteenth run climbs th... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 61–62 of Prelude in C Major, BWV 846 (Well-Tempered Clavier) (continuation of mm. 57–60), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 61–62 and descr... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-nocturne-op9-no2:m001-004:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Nocturne in Eb Major, Op. 9 No. 2",
"composer": "Frederic Chopin",
"composition_year": 1832,
"composition_pd_status_us": "public_domain",
"composition_pd_s... | {
"song_id": "chopin-nocturne-op9-no2",
"phrase_window": "measures 1-4",
"instrument": "piano",
"key": "Eb major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "opening antecedent — theme statement",
"natural_phrase_boundary": true,
"continuation_target... | {
"midi_sidecar": {
"midi_sha256": "55c501bc0198928b7c92b30c1c6acfcc43de404f154e3416542b15011bf14fa3",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 0,
"t_ticks": 0,
"dur_seconds": 0.83125,
"dur_ticks": 798,
"note": 70,
"name": "A#4",
... | {
"measure_range": [
1,
4
],
"structure": "Antecedent phrase — Eb major opening theme, ends on dominant",
"key_moments": [
"m1 Eb cantabile theme entrance",
"m2 ascending melodic peak",
"m4 half cadence on Bb dominant"
],
"teaching_goals": [
"singing cantabile RH touch",
"LH-RH i... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 1–4 of Nocturne in Eb Major, Op. 9 No. 2, view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 1–4 of the Chopin Noctu... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-nocturne-op9-no2:m005-008:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Nocturne in Eb Major, Op. 9 No. 2",
"composer": "Frederic Chopin",
"composition_year": 1832,
"composition_pd_status_us": "public_domain",
"composition_pd_s... | {
"song_id": "chopin-nocturne-op9-no2",
"phrase_window": "measures 5-8",
"instrument": "piano",
"key": "Eb major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "consequent — resolution to tonic",
"natural_phrase_boundary": true,
"paired_pro... | {
"midi_sidecar": {
"midi_sha256": "55c501bc0198928b7c92b30c1c6acfcc43de404f154e3416542b15011bf14fa3",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 8.058333,
"t_ticks": 7736,
"dur_seconds": 0.202083,
"dur_ticks": 194,
"note": 55,
"name": "G3... | {
"measure_range": [
5,
8
],
"structure": "Consequent phrase — completes the period with tonic arrival on Eb",
"key_moments": [
"m5 melody continues from dominant",
"m6-7 descending resolution",
"m8 tonic Eb arrival"
],
"teaching_goals": [
"feel the resolution as an exhale after mm. ... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 5–8 of Nocturne in Eb Major, Op. 9 No. 2 (continuation of mm. 1–4), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Now play measures 5–8 and explain how they resolve ... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-nocturne-op9-no2:m009-012:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Nocturne in Eb Major, Op. 9 No. 2",
"composer": "Frederic Chopin",
"composition_year": 1832,
"composition_pd_status_us": "public_domain",
"composition_pd_s... | {
"song_id": "chopin-nocturne-op9-no2",
"phrase_window": "measures 9-12",
"instrument": "piano",
"key": "Eb major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "variant antecedent — ornamental coloratura over LH waltz figure",
"natural_phrase_boundary": ... | {
"midi_sidecar": {
"midi_sha256": "55c501bc0198928b7c92b30c1c6acfcc43de404f154e3416542b15011bf14fa3",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 16.01875,
"t_ticks": 15378,
"dur_seconds": 0.170833,
"dur_ticks": 164,
"note": 55,
"name": "G... | {
"measure_range": [
9,
12
],
"structure": "Variant antecedent of the second period (paired with the consequent at m. 13–16). The right hand carries the ornamented melodic line — a re-elaborated version of the m. 1–4 theme with more figural detail — while the left hand sets a 12/8-style accompaniment whos... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 9–12 of Nocturne in Eb Major, Op. 9 No. 2, view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 9–12 of the Nocturne —... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-nocturne-op9-no2:m013-016:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Nocturne in Eb Major, Op. 9 No. 2",
"composer": "Frederic Chopin",
"composition_year": 1832,
"composition_pd_status_us": "public_domain",
"composition_pd_s... | {
"song_id": "chopin-nocturne-op9-no2",
"phrase_window": "measures 13-16",
"instrument": "piano",
"key": "Eb major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "ornamented consequent",
"natural_phrase_boundary": true,
"paired_prompt_recor... | {
"midi_sidecar": {
"midi_sha256": "55c501bc0198928b7c92b30c1c6acfcc43de404f154e3416542b15011bf14fa3",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 24.1125,
"t_ticks": 23148,
"dur_seconds": 2.202083,
"dur_ticks": 2114,
"note": 75,
"name": "D... | {
"measure_range": [
13,
16
],
"structure": "Ornamented consequent — grace notes, trills on resolution",
"key_moments": [
"m13 ornamental turns begin",
"m15 trill above resolution",
"m16 tonic arrival with decoration"
],
"teaching_goals": [
"relaxed wrist for ornaments",
"ornamen... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 13–16 of Nocturne in Eb Major, Op. 9 No. 2 (continuation of mm. 9–12), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 13–16 and describe the ornamentati... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-nocturne-op9-no2:m017-020:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Nocturne in Eb Major, Op. 9 No. 2",
"composer": "Frederic Chopin",
"composition_year": 1832,
"composition_pd_status_us": "public_domain",
"composition_pd_s... | {
"song_id": "chopin-nocturne-op9-no2",
"phrase_window": "measures 17-20",
"instrument": "piano",
"key": "Eb major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "middle section — developmental antecedent",
"natural_phrase_boundary": true,
"continuation... | {
"midi_sidecar": {
"midi_sha256": "55c501bc0198928b7c92b30c1c6acfcc43de404f154e3416542b15011bf14fa3",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 32.002083,
"t_ticks": 30722,
"dur_seconds": 0.104167,
"dur_ticks": 100,
"note": 67,
"name": "... | {
"measure_range": [
17,
20
],
"structure": "Developmental antecedent — chromatic ascent, expressive peak",
"key_moments": [
"m17 chromatic color begins",
"m19 melodic peak of middle section",
"m20 suspense before resolution"
],
"teaching_goals": [
"shape the climax dynamically — thi... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 17–20 of Nocturne in Eb Major, Op. 9 No. 2, view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 17–20 of the Nocturne... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-nocturne-op9-no2:m021-024:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Nocturne in Eb Major, Op. 9 No. 2",
"composer": "Frederic Chopin",
"composition_year": 1832,
"composition_pd_status_us": "public_domain",
"composition_pd_s... | {
"song_id": "chopin-nocturne-op9-no2",
"phrase_window": "measures 21-24",
"instrument": "piano",
"key": "Eb major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "middle section — developmental consequent",
"natural_phrase_boundary": true,
... | {
"midi_sidecar": {
"midi_sha256": "55c501bc0198928b7c92b30c1c6acfcc43de404f154e3416542b15011bf14fa3",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 40.414583,
"t_ticks": 38798,
"dur_seconds": 0.7,
"dur_ticks": 672,
"note": 79,
"name": "G5",
... | {
"measure_range": [
21,
24
],
"structure": "Developmental consequent — descending resolution, extended trill",
"key_moments": [
"m21 descent from peak",
"m23 extended cadential trill",
"m24 tonic settling"
],
"teaching_goals": [
"pace the descent — don't rush the resolution",
"t... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 21–24 of Nocturne in Eb Major, Op. 9 No. 2 (continuation of mm. 17–20), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 21–24 and describe how this middl... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-nocturne-op9-no2:m025-028:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Nocturne in Eb Major, Op. 9 No. 2",
"composer": "Frederic Chopin",
"composition_year": 1832,
"composition_pd_status_us": "public_domain",
"composition_pd_s... | {
"song_id": "chopin-nocturne-op9-no2",
"phrase_window": "measures 25-28",
"instrument": "piano",
"key": "Eb major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "second period — third antecedent",
"natural_phrase_boundary": true,
"continuation_target_w... | {
"midi_sidecar": {
"midi_sha256": "55c501bc0198928b7c92b30c1c6acfcc43de404f154e3416542b15011bf14fa3",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 48.095833,
"t_ticks": 46172,
"dur_seconds": 0.43125,
"dur_ticks": 414,
"note": 70,
"name": "A... | {
"measure_range": [
25,
28
],
"structure": "Third period antecedent — theme variant with growing ornamental complexity",
"key_moments": [
"m25 theme variant enters",
"m27 melodic ornamentation increases",
"m28 dominant approach"
],
"teaching_goals": [
"feel the ornaments as natural ... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 25–28 of Nocturne in Eb Major, Op. 9 No. 2, view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 25–28 of the Nocturne... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-nocturne-op9-no2:m029-032:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Nocturne in Eb Major, Op. 9 No. 2",
"composer": "Frederic Chopin",
"composition_year": 1832,
"composition_pd_status_us": "public_domain",
"composition_pd_s... | {
"song_id": "chopin-nocturne-op9-no2",
"phrase_window": "measures 29-32",
"instrument": "piano",
"key": "Eb major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "second period — third consequent",
"natural_phrase_boundary": true,
"paired_p... | {
"midi_sidecar": {
"midi_sha256": "55c501bc0198928b7c92b30c1c6acfcc43de404f154e3416542b15011bf14fa3",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 56.05,
"t_ticks": 53808,
"dur_seconds": 0.114583,
"dur_ticks": 110,
"note": 62,
"name": "D4",... | {
"measure_range": [
29,
32
],
"structure": "Third period consequent — ornamented resolution, descending close",
"key_moments": [
"m29 melody descends with ornaments",
"m31 tonic approach",
"m32 tonic arrival"
],
"teaching_goals": [
"ornaments on the resolution should feel like a sig... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 29–32 of Nocturne in Eb Major, Op. 9 No. 2 (continuation of mm. 25–28), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 29–32 and describe how this phras... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-nocturne-op9-no2:m033-036:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Nocturne in Eb Major, Op. 9 No. 2",
"composer": "Frederic Chopin",
"composition_year": 1832,
"composition_pd_status_us": "public_domain",
"composition_pd_s... | {
"song_id": "chopin-nocturne-op9-no2",
"phrase_window": "measures 33-36",
"instrument": "piano",
"key": "Eb major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "lyrical peak — fourth antecedent",
"natural_phrase_boundary": true,
"continuation_target_w... | {
"midi_sidecar": {
"midi_sha256": "55c501bc0198928b7c92b30c1c6acfcc43de404f154e3416542b15011bf14fa3",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 64.395833,
"t_ticks": 61820,
"dur_seconds": 0.391667,
"dur_ticks": 376,
"note": 74,
"name": "... | {
"measure_range": [
33,
36
],
"structure": "Lyrical peak antecedent — melody soars with elaborate ornaments",
"key_moments": [
"m33 melody rises toward lyrical peak",
"m35 highest ornamental complexity",
"m36 dominant suspension"
],
"teaching_goals": [
"shape the phrase toward the p... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 33–36 of Nocturne in Eb Major, Op. 9 No. 2, view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 33–36 of the Nocturne... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-nocturne-op9-no2:m037-040:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Nocturne in Eb Major, Op. 9 No. 2",
"composer": "Frederic Chopin",
"composition_year": 1832,
"composition_pd_status_us": "public_domain",
"composition_pd_s... | {
"song_id": "chopin-nocturne-op9-no2",
"phrase_window": "measures 37-40",
"instrument": "piano",
"key": "Eb major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "lyrical peak — fourth consequent",
"natural_phrase_boundary": true,
"paired_p... | {
"midi_sidecar": {
"midi_sha256": "55c501bc0198928b7c92b30c1c6acfcc43de404f154e3416542b15011bf14fa3",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 72.254167,
"t_ticks": 69364,
"dur_seconds": 1.589583,
"dur_ticks": 1526,
"note": 77,
"name": ... | {
"measure_range": [
37,
40
],
"structure": "Lyrical peak descent — graceful fall from peak, ornamental close",
"key_moments": [
"m37 descent begins",
"m39 melodic arc completing",
"m40 soft arrival"
],
"teaching_goals": [
"the descent should feel like a natural exhale after the peak... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 37–40 of Nocturne in Eb Major, Op. 9 No. 2 (continuation of mm. 33–36), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 37–40 and describe how this peak ... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-nocturne-op9-no2:m041-044:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Nocturne in Eb Major, Op. 9 No. 2",
"composer": "Frederic Chopin",
"composition_year": 1832,
"composition_pd_status_us": "public_domain",
"composition_pd_s... | {
"song_id": "chopin-nocturne-op9-no2",
"phrase_window": "measures 41-44",
"instrument": "piano",
"key": "Eb major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "expressive continuation — fifth antecedent",
"natural_phrase_boundary": true,
"continuatio... | {
"midi_sidecar": {
"midi_sha256": "55c501bc0198928b7c92b30c1c6acfcc43de404f154e3416542b15011bf14fa3",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 80.339583,
"t_ticks": 77126,
"dur_seconds": 0.470833,
"dur_ticks": 452,
"note": 63,
"name": "... | {
"measure_range": [
41,
44
],
"structure": "Expressive continuation antecedent — mature melodic variant",
"key_moments": [
"m41 theme continues in richer form",
"m43 LH texture grows more active",
"m44 dominant approach"
],
"teaching_goals": [
"feel the accumulated weight of the the... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 41–44 of Nocturne in Eb Major, Op. 9 No. 2, view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 41–44 of the Nocturne... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-nocturne-op9-no2:m045-048:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Nocturne in Eb Major, Op. 9 No. 2",
"composer": "Frederic Chopin",
"composition_year": 1832,
"composition_pd_status_us": "public_domain",
"composition_pd_s... | {
"song_id": "chopin-nocturne-op9-no2",
"phrase_window": "measures 45-48",
"instrument": "piano",
"key": "Eb major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "expressive continuation — fifth consequent",
"natural_phrase_boundary": true,
... | {
"midi_sidecar": {
"midi_sha256": "55c501bc0198928b7c92b30c1c6acfcc43de404f154e3416542b15011bf14fa3",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 88,
"t_ticks": 84480,
"dur_seconds": 0.091667,
"dur_ticks": 88,
"note": 63,
"name": "D#4",
... | {
"measure_range": [
45,
48
],
"structure": "Expressive continuation consequent — long melodic line, breathing quality",
"key_moments": [
"m45 long melodic phrase continues",
"m47 breathing space",
"m48 phrase close"
],
"teaching_goals": [
"long melodic phrases require sustained arm ... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 45–48 of Nocturne in Eb Major, Op. 9 No. 2 (continuation of mm. 41–44), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 45–48 and describe the continuati... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-nocturne-op9-no2:m057-060:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Nocturne in Eb Major, Op. 9 No. 2",
"composer": "Frederic Chopin",
"composition_year": 1832,
"composition_pd_status_us": "public_domain",
"composition_pd_s... | {
"song_id": "chopin-nocturne-op9-no2",
"phrase_window": "measures 57-60",
"instrument": "piano",
"key": "Eb major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "late section — antecedent",
"natural_phrase_boundary": true,
"continuation_target_window":... | {
"midi_sidecar": {
"midi_sha256": "55c501bc0198928b7c92b30c1c6acfcc43de404f154e3416542b15011bf14fa3",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 112.0875,
"t_ticks": 107604,
"dur_seconds": 0.2,
"dur_ticks": 192,
"note": 46,
"name": "A#2",... | {
"measure_range": [
57,
60
],
"structure": "Late section antecedent — theme with full ornamental maturity",
"key_moments": [
"m57 mature theme variant",
"m59 full ornamental development",
"m60 dominant approach"
],
"teaching_goals": [
"the late section has the accumulated beauty of ... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 57–60 of Nocturne in Eb Major, Op. 9 No. 2, view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 57–60 of the Nocturne... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-nocturne-op9-no2:m061-064:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Nocturne in Eb Major, Op. 9 No. 2",
"composer": "Frederic Chopin",
"composition_year": 1832,
"composition_pd_status_us": "public_domain",
"composition_pd_s... | {
"song_id": "chopin-nocturne-op9-no2",
"phrase_window": "measures 61-64",
"instrument": "piano",
"key": "Eb major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "late section — consequent",
"natural_phrase_boundary": true,
"paired_prompt_r... | {
"midi_sidecar": {
"midi_sha256": "55c501bc0198928b7c92b30c1c6acfcc43de404f154e3416542b15011bf14fa3",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 120.060417,
"t_ticks": 115258,
"dur_seconds": 0.358333,
"dur_ticks": 344,
"note": 75,
"name":... | {
"measure_range": [
61,
64
],
"structure": "Late section consequent — ornamented descent, late-section resolution",
"key_moments": [
"m61 melodic descent with ornaments",
"m63 tonic approach",
"m64 quiet arrival"
],
"teaching_goals": [
"late-section resolutions feel heavier — more w... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 61–64 of Nocturne in Eb Major, Op. 9 No. 2 (continuation of mm. 57–60), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 61–64 and describe how this phras... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-nocturne-op9-no2:m065-068:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Nocturne in Eb Major, Op. 9 No. 2",
"composer": "Frederic Chopin",
"composition_year": 1832,
"composition_pd_status_us": "public_domain",
"composition_pd_s... | {
"song_id": "chopin-nocturne-op9-no2",
"phrase_window": "measures 65-68",
"instrument": "piano",
"key": "Eb major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "late section — sixth antecedent",
"natural_phrase_boundary": true,
"continuation_target_wi... | {
"midi_sidecar": {
"midi_sha256": "55c501bc0198928b7c92b30c1c6acfcc43de404f154e3416542b15011bf14fa3",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 128.385417,
"t_ticks": 123250,
"dur_seconds": 0.135417,
"dur_ticks": 130,
"note": 69,
"name":... | {
"measure_range": [
65,
68
],
"structure": "Later section sixth antecedent — elaborate ornamental phrase",
"key_moments": [
"m65 ornamental elaboration continues",
"m67 melodic peak within phrase",
"m68 expectant dominant"
],
"teaching_goals": [
"recognize the familiar structural ge... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 65–68 of Nocturne in Eb Major, Op. 9 No. 2, view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 65–68 of the Nocturne... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-nocturne-op9-no2:m069-072:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Nocturne in Eb Major, Op. 9 No. 2",
"composer": "Frederic Chopin",
"composition_year": 1832,
"composition_pd_status_us": "public_domain",
"composition_pd_s... | {
"song_id": "chopin-nocturne-op9-no2",
"phrase_window": "measures 69-72",
"instrument": "piano",
"key": "Eb major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "late section — sixth consequent",
"natural_phrase_boundary": true,
"paired_pr... | {
"midi_sidecar": {
"midi_sha256": "55c501bc0198928b7c92b30c1c6acfcc43de404f154e3416542b15011bf14fa3",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 136.025,
"t_ticks": 130584,
"dur_seconds": 0.470833,
"dur_ticks": 452,
"note": 74,
"name": "D... | {
"measure_range": [
69,
72
],
"structure": "Later section sixth consequent — tonic resolution through ornaments",
"key_moments": [
"m69 descent toward tonic",
"m71 tonic approach",
"m72 tonic arrival"
],
"teaching_goals": [
"the ornamental resolution should feel like a sigh, not an ... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 69–72 of Nocturne in Eb Major, Op. 9 No. 2 (continuation of mm. 65–68), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 69–72 and describe the completion... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-nocturne-op9-no2:m073-076:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Nocturne in Eb Major, Op. 9 No. 2",
"composer": "Frederic Chopin",
"composition_year": 1832,
"composition_pd_status_us": "public_domain",
"composition_pd_s... | {
"song_id": "chopin-nocturne-op9-no2",
"phrase_window": "measures 73-76",
"instrument": "piano",
"key": "Eb major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "coda approach — antecedent",
"natural_phrase_boundary": true,
"continuation_target_window"... | {
"midi_sidecar": {
"midi_sha256": "55c501bc0198928b7c92b30c1c6acfcc43de404f154e3416542b15011bf14fa3",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 144.208333,
"t_ticks": 138440,
"dur_seconds": 0.258333,
"dur_ticks": 248,
"note": 73,
"name":... | {
"measure_range": [
73,
76
],
"structure": "Coda approach antecedent — theme approaching final statement",
"key_moments": [
"m73 theme in final approach",
"m75 penultimate ornamental gesture",
"m76 dominant preparation"
],
"teaching_goals": [
"feel that the piece is nearing its conc... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 73–76 of Nocturne in Eb Major, Op. 9 No. 2, view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 73–76 of the Nocturne... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-nocturne-op9-no2:m077-080:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Nocturne in Eb Major, Op. 9 No. 2",
"composer": "Frederic Chopin",
"composition_year": 1832,
"composition_pd_status_us": "public_domain",
"composition_pd_s... | {
"song_id": "chopin-nocturne-op9-no2",
"phrase_window": "measures 77-80",
"instrument": "piano",
"key": "Eb major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "coda approach — consequent",
"natural_phrase_boundary": true,
"paired_prompt_... | {
"midi_sidecar": {
"midi_sha256": "55c501bc0198928b7c92b30c1c6acfcc43de404f154e3416542b15011bf14fa3",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 152.116667,
"t_ticks": 146032,
"dur_seconds": 0.1375,
"dur_ticks": 132,
"note": 76,
"name": "... | {
"measure_range": [
77,
80
],
"structure": "Coda approach consequent — quiet, ornamented close",
"key_moments": [
"m77 final melodic descent",
"m79 near-final cadence",
"m80 quiet settling"
],
"teaching_goals": [
"the piece closes with the same ornamental grace it opened with",
... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 77–80 of Nocturne in Eb Major, Op. 9 No. 2 (continuation of mm. 73–76), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 77–80 and describe how this secti... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-prelude-e-minor:m001-004:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in E Minor, Op. 28 No. 4",
"composer": "Frederic Chopin",
"composition_year": 1839,
"composition_pd_status_us": "public_domain",
"composition_pd_st... | {
"song_id": "chopin-prelude-e-minor",
"phrase_window": "measures 1-4",
"instrument": "piano",
"key": "E minor",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "opening — sustained melody over chromatic bass",
"natural_phrase_boundary": true,
"continuatio... | {
"midi_sidecar": {
"midi_sha256": "f83cd888d5a6fedf10e222f8c3fa90c8b8425b482613fcce93b1d57b89141b0d",
"ticks_per_beat": 384,
"timed_events": [
{
"t_seconds": 2,
"t_ticks": 1536,
"dur_seconds": 1.135417,
"dur_ticks": 872,
"note": 59,
"name": "B3",
... | {
"measure_range": [
1,
4
],
"structure": "Opening — sustained RH over step-wise chromatic LH descent",
"key_moments": [
"m1 E minor opening chord with descending bass",
"m3 chromatic passing note in bass",
"m4 dominant B in bass — cadential approach"
],
"teaching_goals": [
"sustaine... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 1–4 of Prelude in E Minor, Op. 28 No. 4, view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 1–4 of Chopin's Prelude ... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-prelude-e-minor:m005-008:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in E Minor, Op. 28 No. 4",
"composer": "Frederic Chopin",
"composition_year": 1839,
"composition_pd_status_us": "public_domain",
"composition_pd_st... | {
"song_id": "chopin-prelude-e-minor",
"phrase_window": "measures 5-8",
"instrument": "piano",
"key": "E minor",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "consequent — bass continues descending",
"natural_phrase_boundary": true,
"paired... | {
"midi_sidecar": {
"midi_sha256": "f83cd888d5a6fedf10e222f8c3fa90c8b8425b482613fcce93b1d57b89141b0d",
"ticks_per_beat": 384,
"timed_events": [
{
"t_seconds": 8.177083,
"t_ticks": 6280,
"dur_seconds": 3.630208,
"dur_ticks": 2788,
"note": 71,
"name": "B... | {
"measure_range": [
5,
8
],
"structure": "Consequent — LH bass continues descending, RH grows more questioning",
"key_moments": [
"m5 bass continues below tonic",
"m7 RH melodic shift — slight variation",
"m8 dominant arrival again"
],
"teaching_goals": [
"feel the bass pulling down... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 5–8 of Prelude in E Minor, Op. 28 No. 4 (continuation of mm. 1–4), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 5–8 and show how the bass continues fr... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-prelude-e-minor:m009-012:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in E Minor, Op. 28 No. 4",
"composer": "Frederic Chopin",
"composition_year": 1839,
"composition_pd_status_us": "public_domain",
"composition_pd_st... | {
"song_id": "chopin-prelude-e-minor",
"phrase_window": "measures 9-12",
"instrument": "piano",
"key": "E minor",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "second phrase — intensifying descent",
"natural_phrase_boundary": true,
"continuation_target_... | {
"midi_sidecar": {
"midi_sha256": "f83cd888d5a6fedf10e222f8c3fa90c8b8425b482613fcce93b1d57b89141b0d",
"ticks_per_beat": 384,
"timed_events": [
{
"t_seconds": 16.364583,
"t_ticks": 12568,
"dur_seconds": 1.549479,
"dur_ticks": 1190,
"note": 72,
"name": ... | {
"measure_range": [
9,
12
],
"structure": "Second phrase — LH reaches lower register, harmonic tension increases",
"key_moments": [
"m9 bass enters new harmonic area",
"m11 dissonant chord — new chromatic pitch",
"m12 partial cadence"
],
"teaching_goals": [
"feel the darkening of ha... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 9–12 of Prelude in E Minor, Op. 28 No. 4, view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 9–12 and describe how t... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-prelude-e-minor:m013-016:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in E Minor, Op. 28 No. 4",
"composer": "Frederic Chopin",
"composition_year": 1839,
"composition_pd_status_us": "public_domain",
"composition_pd_st... | {
"song_id": "chopin-prelude-e-minor",
"phrase_window": "measures 13-16",
"instrument": "piano",
"key": "E minor",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "climactic approach",
"natural_phrase_boundary": true,
"paired_prompt_record_id"... | {
"midi_sidecar": {
"midi_sha256": "f83cd888d5a6fedf10e222f8c3fa90c8b8425b482613fcce93b1d57b89141b0d",
"ticks_per_beat": 384,
"timed_events": [
{
"t_seconds": 24.041667,
"t_ticks": 18464,
"dur_seconds": 0.166667,
"dur_ticks": 128,
"note": 60,
"name": "... | {
"measure_range": [
13,
16
],
"structure": "Climactic approach — RH ascends, bass deepens, maximum tension",
"key_moments": [
"m13 RH reaches upward",
"m15 harmonic peak — most distant from tonic",
"m16 start of descent back"
],
"teaching_goals": [
"shape the climax dynamically — th... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 13–16 of Prelude in E Minor, Op. 28 No. 4 (continuation of mm. 9–12), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 13–16 and describe the intensificat... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-prelude-e-minor:m017-020:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in E Minor, Op. 28 No. 4",
"composer": "Frederic Chopin",
"composition_year": 1839,
"composition_pd_status_us": "public_domain",
"composition_pd_st... | {
"song_id": "chopin-prelude-e-minor",
"phrase_window": "measures 17-20",
"instrument": "piano",
"key": "E minor",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "post-climax — descent antecedent",
"natural_phrase_boundary": true,
"continuation_target_win... | {
"midi_sidecar": {
"midi_sha256": "f83cd888d5a6fedf10e222f8c3fa90c8b8425b482613fcce93b1d57b89141b0d",
"ticks_per_beat": 384,
"timed_events": [
{
"t_seconds": 32.335938,
"t_ticks": 24834,
"dur_seconds": 3.466146,
"dur_ticks": 2662,
"note": 69,
"name": ... | {
"measure_range": [
17,
20
],
"structure": "Post-climax descent antecedent — RH falls while chromatic bass continues",
"key_moments": [
"m17 descent begins from climactic peak",
"m19 RH melody settles into midrange",
"m20 LH bass in lower territory"
],
"teaching_goals": [
"the desce... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 17–20 of Prelude in E Minor, Op. 28 No. 4, view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 17–20 of the Chopin Pr... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-prelude-e-minor:m021-024:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in E Minor, Op. 28 No. 4",
"composer": "Frederic Chopin",
"composition_year": 1839,
"composition_pd_status_us": "public_domain",
"composition_pd_st... | {
"song_id": "chopin-prelude-e-minor",
"phrase_window": "measures 21-24",
"instrument": "piano",
"key": "E minor",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "post-climax — descent consequent",
"natural_phrase_boundary": true,
"paired_pro... | {
"midi_sidecar": {
"midi_sha256": "f83cd888d5a6fedf10e222f8c3fa90c8b8425b482613fcce93b1d57b89141b0d",
"ticks_per_beat": 384,
"timed_events": [
{
"t_seconds": 40.4375,
"t_ticks": 31056,
"dur_seconds": 2.416667,
"dur_ticks": 1856,
"note": 68,
"name": "G... | {
"measure_range": [
21,
24
],
"structure": "Post-climax descent consequent — resignation, bass far from home",
"key_moments": [
"m21 bass has traveled far from opening E",
"m23 RH melody quiets further",
"m24 deep harmonic area"
],
"teaching_goals": [
"the mood is resignation — not ... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 21–24 of Prelude in E Minor, Op. 28 No. 4 (continuation of mm. 17–20), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 21–24 and describe the continuatio... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-prelude-e-minor:m025-028:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in E Minor, Op. 28 No. 4",
"composer": "Frederic Chopin",
"composition_year": 1839,
"composition_pd_status_us": "public_domain",
"composition_pd_st... | {
"song_id": "chopin-prelude-e-minor",
"phrase_window": "measures 25-28",
"instrument": "piano",
"key": "E minor",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "middle descent — antecedent",
"natural_phrase_boundary": true,
"continuation_target_window":... | {
"midi_sidecar": {
"midi_sha256": "f83cd888d5a6fedf10e222f8c3fa90c8b8425b482613fcce93b1d57b89141b0d",
"ticks_per_beat": 384,
"timed_events": [
{
"t_seconds": 48.315104,
"t_ticks": 37106,
"dur_seconds": 0.309896,
"dur_ticks": 238,
"note": 57,
"name": "... | {
"measure_range": [
25,
28
],
"structure": "Middle descent antecedent — bass deep, RH whispered chords",
"key_moments": [
"m25 bass in deep register",
"m27 RH chords barely above silence",
"m28 harmonic depth maximum"
],
"teaching_goals": [
"the piece is deep in its most austere sec... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 25–28 of Prelude in E Minor, Op. 28 No. 4, view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 25–28 of the Prelude —... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-prelude-e-minor:m029-032:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in E Minor, Op. 28 No. 4",
"composer": "Frederic Chopin",
"composition_year": 1839,
"composition_pd_status_us": "public_domain",
"composition_pd_st... | {
"song_id": "chopin-prelude-e-minor",
"phrase_window": "measures 29-32",
"instrument": "piano",
"key": "E minor",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "middle descent — consequent",
"natural_phrase_boundary": true,
"paired_prompt_r... | {
"midi_sidecar": {
"midi_sha256": "f83cd888d5a6fedf10e222f8c3fa90c8b8425b482613fcce93b1d57b89141b0d",
"ticks_per_beat": 384,
"timed_events": [
{
"t_seconds": 56,
"t_ticks": 43008,
"dur_seconds": 1.507813,
"dur_ticks": 1158,
"note": 51,
"name": "D#3",
... | {
"measure_range": [
29,
32
],
"structure": "Middle descent consequent — approaching lowest point",
"key_moments": [
"m29 bass approaching lowest register",
"m31 maximum harmonic distance from opening",
"m32 approaching the end"
],
"teaching_goals": [
"the descent is reaching its end... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 29–32 of Prelude in E Minor, Op. 28 No. 4 (continuation of mm. 25–28), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 29–32 and describe where the bass ... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-prelude-e-minor:m033-036:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in E Minor, Op. 28 No. 4",
"composer": "Frederic Chopin",
"composition_year": 1839,
"composition_pd_status_us": "public_domain",
"composition_pd_st... | {
"song_id": "chopin-prelude-e-minor",
"phrase_window": "measures 33-36",
"instrument": "piano",
"key": "E minor",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "near-end — antecedent",
"natural_phrase_boundary": true,
"continuation_target_window": [
... | {
"midi_sidecar": {
"midi_sha256": "f83cd888d5a6fedf10e222f8c3fa90c8b8425b482613fcce93b1d57b89141b0d",
"ticks_per_beat": 384,
"timed_events": [
{
"t_seconds": 64,
"t_ticks": 49152,
"dur_seconds": 0.1875,
"dur_ticks": 144,
"note": 59,
"name": "B3",
... | {
"measure_range": [
33,
36
],
"structure": "Near-end antecedent — bass in deepest register, resigned melody",
"key_moments": [
"m33 bass in lowest area",
"m35 RH melody without aspiration",
"m36 penultimate area"
],
"teaching_goals": [
"the piece has arrived at complete resignation"... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 33–36 of Prelude in E Minor, Op. 28 No. 4, view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 33–36 of the Prelude —... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-prelude-e-minor:m037-040:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in E Minor, Op. 28 No. 4",
"composer": "Frederic Chopin",
"composition_year": 1839,
"composition_pd_status_us": "public_domain",
"composition_pd_st... | {
"song_id": "chopin-prelude-e-minor",
"phrase_window": "measures 37-40",
"instrument": "piano",
"key": "E minor",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "near-end — consequent",
"natural_phrase_boundary": true,
"paired_prompt_record_... | {
"midi_sidecar": {
"midi_sha256": "f83cd888d5a6fedf10e222f8c3fa90c8b8425b482613fcce93b1d57b89141b0d",
"ticks_per_beat": 384,
"timed_events": [
{
"t_seconds": 72.338542,
"t_ticks": 55556,
"dur_seconds": 0.419271,
"dur_ticks": 322,
"note": 56,
"name": "... | {
"measure_range": [
37,
40
],
"structure": "Near-end consequent — complete resignation, approaching final measures",
"key_moments": [
"m37 chromatic motion continues in stillness",
"m39 final harmonic area",
"m40 one of the final chromatic steps"
],
"teaching_goals": [
"recognize th... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 37–40 of Prelude in E Minor, Op. 28 No. 4 (continuation of mm. 33–36), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 37–40 and describe the penultimate... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-prelude-e-minor:m041-044:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in E Minor, Op. 28 No. 4",
"composer": "Frederic Chopin",
"composition_year": 1839,
"composition_pd_status_us": "public_domain",
"composition_pd_st... | {
"song_id": "chopin-prelude-e-minor",
"phrase_window": "measures 41-44",
"instrument": "piano",
"key": "E minor",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "final approach — antecedent",
"natural_phrase_boundary": true,
"continuation_target_window":... | {
"midi_sidecar": {
"midi_sha256": "f83cd888d5a6fedf10e222f8c3fa90c8b8425b482613fcce93b1d57b89141b0d",
"ticks_per_beat": 384,
"timed_events": [
{
"t_seconds": 80.135417,
"t_ticks": 61544,
"dur_seconds": 0.385417,
"dur_ticks": 296,
"note": 75,
"name": "... | {
"measure_range": [
41,
44
],
"structure": "Final approach antecedent — complete harmonic stillness",
"key_moments": [
"m41 near the end",
"m43 final measures approaching",
"m44 penultimate phrase"
],
"teaching_goals": [
"the piece has arrived — nothing more to say dynamically",
... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 41–44 of Prelude in E Minor, Op. 28 No. 4, view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 41–44 of the Prelude —... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
chopin-prelude-e-minor:m045-048:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Prelude in E Minor, Op. 28 No. 4",
"composer": "Frederic Chopin",
"composition_year": 1839,
"composition_pd_status_us": "public_domain",
"composition_pd_st... | {
"song_id": "chopin-prelude-e-minor",
"phrase_window": "measures 45-48",
"instrument": "piano",
"key": "E minor",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "final approach — consequent",
"natural_phrase_boundary": true,
"paired_prompt_r... | {
"midi_sidecar": {
"midi_sha256": "f83cd888d5a6fedf10e222f8c3fa90c8b8425b482613fcce93b1d57b89141b0d",
"ticks_per_beat": 384,
"timed_events": [
{
"t_seconds": 88.192708,
"t_ticks": 67732,
"dur_seconds": 0.203125,
"dur_ticks": 156,
"note": 59,
"name": "... | {
"measure_range": [
45,
48
],
"structure": "Final approach consequent — approaching final E minor chord",
"key_moments": [
"m45 penultimate phrases",
"m47 final E minor approach",
"m48 near the final chord"
],
"teaching_goals": [
"the prelude is completing — the long chromatic journ... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 45–48 of Prelude in E Minor, Op. 28 No. 4 (continuation of mm. 41–44), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 45–48 and describe the closing phr... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
clair-de-lune:m001-004:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Clair de Lune (Suite bergamasque, III)",
"composer": "Claude Debussy",
"composition_year": 1905,
"composition_pd_status_us": "public_domain",
"composition_... | {
"song_id": "clair-de-lune",
"phrase_window": "measures 1-4",
"instrument": "piano",
"key": "Db major",
"tempo_bpm": 100,
"time_signature": "9/8",
"window_role": "prompt",
"musical_phrase_label": "opening atmosphere — introductory phrase",
"natural_phrase_boundary": true,
"continuation_target_windo... | {
"midi_sidecar": {
"midi_sha256": "4dee23c00aed6742905a65f374f231d7a827010400146be7577b1df808a927d0",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 0.3,
"t_ticks": 240,
"dur_seconds": 2.4,
"dur_ticks": 1920,
"note": 65,
"name": "F4",
... | {
"measure_range": [
1,
4
],
"structure": "Opening atmospheric introduction — 9/8 ripple, floating long melody notes",
"key_moments": [
"m1 opening chord with sustained melody",
"m3 harmonic color shift",
"m4 transitional chord — expectation"
],
"teaching_goals": [
"9/8 triplet pulse... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 1–4 of Clair de Lune (Suite bergamasque, III), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 1–4 of Clair de Lu... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | test |
clair-de-lune:m005-008:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Clair de Lune (Suite bergamasque, III)",
"composer": "Claude Debussy",
"composition_year": 1905,
"composition_pd_status_us": "public_domain",
"composition_... | {
"song_id": "clair-de-lune",
"phrase_window": "measures 5-8",
"instrument": "piano",
"key": "Db major",
"tempo_bpm": 100,
"time_signature": "9/8",
"window_role": "continuation_target",
"musical_phrase_label": "opening continuation — melody rises",
"natural_phrase_boundary": true,
"paired_prompt_rec... | {
"midi_sidecar": {
"midi_sha256": "4dee23c00aed6742905a65f374f231d7a827010400146be7577b1df808a927d0",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 10.8,
"t_ticks": 8640,
"dur_seconds": 1.8,
"dur_ticks": 1440,
"note": 61,
"name": "C#4",
... | {
"measure_range": [
5,
8
],
"structure": "Opening continuation — melody climbs, harmonic color deepens",
"key_moments": [
"m5 melody ascends from m.4",
"m7 new harmonic area",
"m8 settling before next section"
],
"teaching_goals": [
"feel the subtle melody rise — don't overplay it",... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 5–8 of Clair de Lune (Suite bergamasque, III) (continuation of mm. 1–4), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 5–8 and describe how the melody ... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | test |
clair-de-lune:m015-018:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Clair de Lune (Suite bergamasque, III)",
"composer": "Claude Debussy",
"composition_year": 1905,
"composition_pd_status_us": "public_domain",
"composition_... | {
"song_id": "clair-de-lune",
"phrase_window": "measures 15-18",
"instrument": "piano",
"key": "Db major",
"tempo_bpm": 100,
"time_signature": "9/8",
"window_role": "prompt",
"musical_phrase_label": "cantabile theme — second section antecedent",
"natural_phrase_boundary": true,
"continuation_target_... | {
"midi_sidecar": {
"midi_sha256": "4dee23c00aed6742905a65f374f231d7a827010400146be7577b1df808a927d0",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 37.8,
"t_ticks": 30240,
"dur_seconds": 1.8,
"dur_ticks": 1440,
"note": 27,
"name": "D#1",
... | {
"measure_range": [
15,
18
],
"structure": "Cantabile second theme — yearning melody arch over lush accompaniment",
"key_moments": [
"m15 famous melody entrance",
"m17 melody reaches toward upper register",
"m18 suspension before peak"
],
"teaching_goals": [
"singing cantabile line ... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 15–18 of Clair de Lune (Suite bergamasque, III), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 15–18 of Clair d... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | test |
clair-de-lune:m019-022:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Clair de Lune (Suite bergamasque, III)",
"composer": "Claude Debussy",
"composition_year": 1905,
"composition_pd_status_us": "public_domain",
"composition_... | {
"song_id": "clair-de-lune",
"phrase_window": "measures 19-22",
"instrument": "piano",
"key": "Db major",
"tempo_bpm": 100,
"time_signature": "9/8",
"window_role": "continuation_target",
"musical_phrase_label": "cantabile theme — consequent, emotional peak",
"natural_phrase_boundary": true,
"paired... | {
"midi_sidecar": {
"midi_sha256": "4dee23c00aed6742905a65f374f231d7a827010400146be7577b1df808a927d0",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 48.6,
"t_ticks": 38880,
"dur_seconds": 1.8,
"dur_ticks": 1440,
"note": 32,
"name": "G#1",
... | {
"measure_range": [
19,
22
],
"structure": "Cantabile consequent — emotional summit, melody peaks, mf/f dynamics",
"key_moments": [
"m19 melody continues to climb",
"m21 peak — highest note of phrase",
"m22 beginning of descent"
],
"teaching_goals": [
"control the crescendo — don't ... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 19–22 of Clair de Lune (Suite bergamasque, III) (continuation of mm. 15–18), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 19–22 and describe how this ... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | test |
clair-de-lune:m023-026:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Clair de Lune (Suite bergamasque, III)",
"composer": "Claude Debussy",
"composition_year": 1905,
"composition_pd_status_us": "public_domain",
"composition_... | {
"song_id": "clair-de-lune",
"phrase_window": "measures 23-26",
"instrument": "piano",
"key": "Db major",
"tempo_bpm": 100,
"time_signature": "9/8",
"window_role": "prompt",
"musical_phrase_label": "post-peak descent — antecedent",
"natural_phrase_boundary": true,
"continuation_target_window": [
... | {
"midi_sidecar": {
"midi_sha256": "4dee23c00aed6742905a65f374f231d7a827010400146be7577b1df808a927d0",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 59.4,
"t_ticks": 47520,
"dur_seconds": 1.8,
"dur_ticks": 1440,
"note": 37,
"name": "C#2",
... | {
"measure_range": [
23,
26
],
"structure": "Post-peak descent antecedent — melody descends, dynamics soften",
"key_moments": [
"m23 descent begins from emotional summit",
"m25 dynamic softens from mf/f",
"m26 melody in midrange, tender quality"
],
"teaching_goals": [
"the descent mu... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 23–26 of Clair de Lune (Suite bergamasque, III), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 23–26 of Clair d... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | test |
clair-de-lune:m027-030:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Clair de Lune (Suite bergamasque, III)",
"composer": "Claude Debussy",
"composition_year": 1905,
"composition_pd_status_us": "public_domain",
"composition_... | {
"song_id": "clair-de-lune",
"phrase_window": "measures 27-30",
"instrument": "piano",
"key": "Db major",
"tempo_bpm": 100,
"time_signature": "9/8",
"window_role": "continuation_target",
"musical_phrase_label": "post-peak descent — consequent",
"natural_phrase_boundary": true,
"paired_prompt_record... | {
"midi_sidecar": {
"midi_sha256": "4dee23c00aed6742905a65f374f231d7a827010400146be7577b1df808a927d0",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 70.2,
"t_ticks": 56160,
"dur_seconds": 0.45,
"dur_ticks": 360,
"note": 37,
"name": "C#2",
... | {
"measure_range": [
27,
30
],
"structure": "Post-peak descent consequent — melody settles, middle section approaches",
"key_moments": [
"m27 melody moves lower",
"m29 pp dynamic restored",
"m30 middle section character emerging"
],
"teaching_goals": [
"the mood has shifted from pass... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 27–30 of Clair de Lune (Suite bergamasque, III) (continuation of mm. 23–26), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 27–30 and describe the conti... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | test |
clair-de-lune:m031-034:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Clair de Lune (Suite bergamasque, III)",
"composer": "Claude Debussy",
"composition_year": 1905,
"composition_pd_status_us": "public_domain",
"composition_... | {
"song_id": "clair-de-lune",
"phrase_window": "measures 31-34",
"instrument": "piano",
"key": "Db major",
"tempo_bpm": 100,
"time_signature": "9/8",
"window_role": "prompt",
"musical_phrase_label": "middle section — atmospheric antecedent",
"natural_phrase_boundary": true,
"continuation_target_wind... | {
"midi_sidecar": {
"midi_sha256": "4dee23c00aed6742905a65f374f231d7a827010400146be7577b1df808a927d0",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 81,
"t_ticks": 64800,
"dur_seconds": 0.9,
"dur_ticks": 720,
"note": 44,
"name": "G#2",
... | {
"measure_range": [
31,
34
],
"structure": "Middle section atmospheric antecedent — flowing triplets, impressionistic shifts",
"key_moments": [
"m31 middle section texture",
"m33 coloristic harmonic shift",
"m34 phrase incomplete"
],
"teaching_goals": [
"the middle section has a mor... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 31–34 of Clair de Lune (Suite bergamasque, III), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 31–34 of Clair d... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | test |
clair-de-lune:m035-038:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Clair de Lune (Suite bergamasque, III)",
"composer": "Claude Debussy",
"composition_year": 1905,
"composition_pd_status_us": "public_domain",
"composition_... | {
"song_id": "clair-de-lune",
"phrase_window": "measures 35-38",
"instrument": "piano",
"key": "Db major",
"tempo_bpm": 100,
"time_signature": "9/8",
"window_role": "continuation_target",
"musical_phrase_label": "middle section — atmospheric consequent",
"natural_phrase_boundary": true,
"paired_prom... | {
"midi_sidecar": {
"midi_sha256": "4dee23c00aed6742905a65f374f231d7a827010400146be7577b1df808a927d0",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 91.8,
"t_ticks": 73440,
"dur_seconds": 0.9,
"dur_ticks": 720,
"note": 49,
"name": "C#3",
... | {
"measure_range": [
35,
38
],
"structure": "Middle section atmospheric consequent — shimmering ripples, coloristic resolution",
"key_moments": [
"m35 ripple texture continues",
"m37 coloristic harmonics",
"m38 phrase settling"
],
"teaching_goals": [
"the ripple texture is continuous... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 35–38 of Clair de Lune (Suite bergamasque, III) (continuation of mm. 31–34), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 35–38 and describe the conti... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | test |
clair-de-lune:m037-040:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Clair de Lune (Suite bergamasque, III)",
"composer": "Claude Debussy",
"composition_year": 1905,
"composition_pd_status_us": "public_domain",
"composition_... | {
"song_id": "clair-de-lune",
"phrase_window": "measures 37-40",
"instrument": "piano",
"key": "Db major",
"tempo_bpm": 100,
"time_signature": "9/8",
"window_role": "prompt",
"musical_phrase_label": "middle section — dramatic antecedent",
"natural_phrase_boundary": true,
"continuation_target_window"... | {
"midi_sidecar": {
"midi_sha256": "4dee23c00aed6742905a65f374f231d7a827010400146be7577b1df808a927d0",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 97.2,
"t_ticks": 77760,
"dur_seconds": 0.45,
"dur_ticks": 360,
"note": 59,
"name": "B3",
... | {
"measure_range": [
37,
40
],
"structure": "Dramatic middle section antecedent — texture swells to rich chords",
"key_moments": [
"m37 dramatic swell begins",
"m39 full chordal texture",
"m40 dynamic peak of middle section"
],
"teaching_goals": [
"this is Debussy's second climactic ... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 37–40 of Clair de Lune (Suite bergamasque, III), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 37–40 of Clair d... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | test |
clair-de-lune:m041-044:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Clair de Lune (Suite bergamasque, III)",
"composer": "Claude Debussy",
"composition_year": 1905,
"composition_pd_status_us": "public_domain",
"composition_... | {
"song_id": "clair-de-lune",
"phrase_window": "measures 41-44",
"instrument": "piano",
"key": "Db major",
"tempo_bpm": 100,
"time_signature": "9/8",
"window_role": "continuation_target",
"musical_phrase_label": "middle section — dramatic resolution",
"natural_phrase_boundary": true,
"paired_prompt_... | {
"midi_sidecar": {
"midi_sha256": "4dee23c00aed6742905a65f374f231d7a827010400146be7577b1df808a927d0",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 108,
"t_ticks": 86400,
"dur_seconds": 2.7,
"dur_ticks": 2160,
"note": 54,
"name": "F#3",
... | {
"measure_range": [
41,
44
],
"structure": "Dramatic middle section resolution — texture returns to ripples, dynamic softens",
"key_moments": [
"m41 tripple texture returns",
"m43 dynamic softens from dramatic peak",
"m44 return to dreaming character"
],
"teaching_goals": [
"the dra... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 41–44 of Clair de Lune (Suite bergamasque, III) (continuation of mm. 37–40), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 41–44 and describe how this ... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | test |
clair-de-lune:m051-054:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Clair de Lune (Suite bergamasque, III)",
"composer": "Claude Debussy",
"composition_year": 1905,
"composition_pd_status_us": "public_domain",
"composition_... | {
"song_id": "clair-de-lune",
"phrase_window": "measures 51-54",
"instrument": "piano",
"key": "Db major",
"tempo_bpm": 100,
"time_signature": "9/8",
"window_role": "prompt",
"musical_phrase_label": "recapitulation — antecedent",
"natural_phrase_boundary": true,
"continuation_target_window": [
5... | {
"midi_sidecar": {
"midi_sha256": "4dee23c00aed6742905a65f374f231d7a827010400146be7577b1df808a927d0",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 135,
"t_ticks": 108000,
"dur_seconds": 1.8,
"dur_ticks": 1440,
"note": 65,
"name": "F4",
... | {
"measure_range": [
51,
54
],
"structure": "Recapitulation antecedent — opening atmosphere returns, memory-tinged",
"key_moments": [
"m51 opening texture returns",
"m53 floating melody again",
"m54 familiar harmonic quality"
],
"teaching_goals": [
"the recapitulation sounds familiar... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 51–54 of Clair de Lune (Suite bergamasque, III), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 51–54 of Clair d... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | test |
clair-de-lune:m055-058:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Clair de Lune (Suite bergamasque, III)",
"composer": "Claude Debussy",
"composition_year": 1905,
"composition_pd_status_us": "public_domain",
"composition_... | {
"song_id": "clair-de-lune",
"phrase_window": "measures 55-58",
"instrument": "piano",
"key": "Db major",
"tempo_bpm": 100,
"time_signature": "9/8",
"window_role": "continuation_target",
"musical_phrase_label": "recapitulation — consequent",
"natural_phrase_boundary": true,
"paired_prompt_record_id... | {
"midi_sidecar": {
"midi_sha256": "4dee23c00aed6742905a65f374f231d7a827010400146be7577b1df808a927d0",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 145.8,
"t_ticks": 116640,
"dur_seconds": 1.8,
"dur_ticks": 1440,
"note": 61,
"name": "C#4",
... | {
"measure_range": [
55,
58
],
"structure": "Recapitulation consequent — familiar melody settling toward conclusion",
"key_moments": [
"m55 melody continues in recapitulation",
"m57 familiar harmonic colors",
"m58 concluding phrase"
],
"teaching_goals": [
"the conclusion is approachi... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 55–58 of Clair de Lune (Suite bergamasque, III) (continuation of mm. 51–54), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 55–58 and describe how the r... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | test |
fur-elise:m001-008:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Fur Elise (Bagatelle No. 25 in A minor)",
"composer": "Ludwig van Beethoven",
"composition_year": 1810,
"composition_pd_status_us": "public_domain",
"compo... | {
"song_id": "fur-elise",
"phrase_window": "measures 1-8",
"instrument": "piano",
"key": "A minor",
"tempo_bpm": 69,
"time_signature": "3/8",
"window_role": "standalone",
"musical_phrase_label": "complete A-theme opening",
"natural_phrase_boundary": false
} | {
"midi_sidecar": {
"midi_sha256": "a1481bdafe94d33e0de8934c97aec45534c908bc797bae7293f626074aec2e07",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 0.867303,
"t_ticks": 480,
"dur_seconds": 0.216826,
"dur_ticks": 120,
"note": 76,
"name": "E5"... | {
"measure_range": [
1,
8
],
"structure": "A-theme opening, oscillating E-D# neighbor motion resolving to A",
"key_moments": [
"m1 RH neighbor figure",
"m4 cadence to E",
"m5 restatement"
],
"teaching_goals": [
"evenness of RH oscillation",
"voice independence",
"phrasing acr... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 1–8 of Für Elise, view the piano roll, analyze the opening figure, play the phrase in a loop, then produce a phrase annotation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Read measures 1–8 of Für Elise and tell m... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": false,
"phrase_continuation_eligible_reason": "window_role='stan... | train |
fur-elise:m009-012:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Fur Elise (Bagatelle No. 25 in A minor)",
"composer": "Ludwig van Beethoven",
"composition_year": 1810,
"composition_pd_status_us": "public_domain",
"compo... | {
"song_id": "fur-elise",
"phrase_window": "measures 9-12",
"instrument": "piano",
"key": "A minor",
"tempo_bpm": 69,
"time_signature": "3/8",
"window_role": "prompt",
"musical_phrase_label": "B section — relative major antecedent",
"natural_phrase_boundary": true,
"continuation_target_window": [
... | {
"midi_sidecar": {
"midi_sha256": "a1481bdafe94d33e0de8934c97aec45534c908bc797bae7293f626074aec2e07",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 10.407632,
"t_ticks": 5760,
"dur_seconds": 0.216826,
"dur_ticks": 120,
"note": 45,
"name": "A... | {
"measure_range": [
9,
12
],
"structure": "B section — relative major C, warmer character, fuller LH",
"key_moments": [
"m9 shift to C major — character change",
"m11 melodic arch of B section",
"m12 dominant G — open ending"
],
"teaching_goals": [
"contrast with A theme — warmer, m... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 9–12 of Fur Elise (Bagatelle No. 25 in A minor), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 9–12 of Für Elis... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
fur-elise:m013-016:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Fur Elise (Bagatelle No. 25 in A minor)",
"composer": "Ludwig van Beethoven",
"composition_year": 1810,
"composition_pd_status_us": "public_domain",
"compo... | {
"song_id": "fur-elise",
"phrase_window": "measures 13-16",
"instrument": "piano",
"key": "A minor",
"tempo_bpm": 69,
"time_signature": "3/8",
"window_role": "continuation_target",
"musical_phrase_label": "B section — relative major consequent",
"natural_phrase_boundary": true,
"paired_prompt_recor... | {
"midi_sidecar": {
"midi_sha256": "a1481bdafe94d33e0de8934c97aec45534c908bc797bae7293f626074aec2e07",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 15.611448,
"t_ticks": 8640,
"dur_seconds": 0.216826,
"dur_ticks": 120,
"note": 45,
"name": "A... | {
"measure_range": [
13,
16
],
"structure": "B section continuation — fuller LH, half cadence on G",
"key_moments": [
"m13 phrase continues in C major",
"m15 LH grows fuller",
"m16 dominant G half cadence"
],
"teaching_goals": [
"fuller LH support in mm. 13–16",
"feel the half ca... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 13–16 of Fur Elise (Bagatelle No. 25 in A minor) (continuation of mm. 9–12), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 13–16 and describe how the B... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
fur-elise:m017-020:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Fur Elise (Bagatelle No. 25 in A minor)",
"composer": "Ludwig van Beethoven",
"composition_year": 1810,
"composition_pd_status_us": "public_domain",
"compo... | {
"song_id": "fur-elise",
"phrase_window": "measures 17-20",
"instrument": "piano",
"key": "A minor",
"tempo_bpm": 69,
"time_signature": "3/8",
"window_role": "prompt",
"musical_phrase_label": "A theme second statement — antecedent",
"natural_phrase_boundary": true,
"continuation_target_window": [
... | {
"midi_sidecar": {
"midi_sha256": "a1481bdafe94d33e0de8934c97aec45534c908bc797bae7293f626074aec2e07",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 20.815265,
"t_ticks": 11520,
"dur_seconds": 0.216826,
"dur_ticks": 120,
"note": 45,
"name": "... | {
"measure_range": [
17,
20
],
"structure": "A theme second statement antecedent — oscillating figure returns after B section",
"key_moments": [
"m17 A minor oscillation resumes",
"m19 character contrast with preceding B section",
"m20 familiar phrase shape"
],
"teaching_goals": [
"f... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 17–20 of Fur Elise (Bagatelle No. 25 in A minor), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 17–20 of Für El... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
fur-elise:m021-024:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Fur Elise (Bagatelle No. 25 in A minor)",
"composer": "Ludwig van Beethoven",
"composition_year": 1810,
"composition_pd_status_us": "public_domain",
"compo... | {
"song_id": "fur-elise",
"phrase_window": "measures 21-24",
"instrument": "piano",
"key": "A minor",
"tempo_bpm": 69,
"time_signature": "3/8",
"window_role": "continuation_target",
"musical_phrase_label": "A theme second statement — consequent",
"natural_phrase_boundary": true,
"paired_prompt_recor... | {
"midi_sidecar": {
"midi_sha256": "a1481bdafe94d33e0de8934c97aec45534c908bc797bae7293f626074aec2e07",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 26.019081,
"t_ticks": 14400,
"dur_seconds": 0.216826,
"dur_ticks": 120,
"note": 40,
"name": "... | {
"measure_range": [
21,
24
],
"structure": "A theme second statement consequent — oscillation continues, approaches dominant",
"key_moments": [
"m21 oscillation continues",
"m23 cadential approach",
"m24 dominant E arrival"
],
"teaching_goals": [
"same patient quality as the first A... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 21–24 of Fur Elise (Bagatelle No. 25 in A minor) (continuation of mm. 17–20), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 21–24 and describe the cont... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
fur-elise:m025-028:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Fur Elise (Bagatelle No. 25 in A minor)",
"composer": "Ludwig van Beethoven",
"composition_year": 1810,
"composition_pd_status_us": "public_domain",
"compo... | {
"song_id": "fur-elise",
"phrase_window": "measures 25-28",
"instrument": "piano",
"key": "A minor",
"tempo_bpm": 69,
"time_signature": "3/8",
"window_role": "prompt",
"musical_phrase_label": "C section — contrasting antecedent",
"natural_phrase_boundary": true,
"continuation_target_window": [
... | {
"midi_sidecar": {
"midi_sha256": "a1481bdafe94d33e0de8934c97aec45534c908bc797bae7293f626074aec2e07",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 31.222897,
"t_ticks": 17280,
"dur_seconds": 0.216826,
"dur_ticks": 120,
"note": 45,
"name": "... | {
"measure_range": [
25,
28
],
"structure": "C section antecedent — contrasting arpeggio texture, key shift",
"key_moments": [
"m25 C section enters with arpeggios",
"m27 key area different from A minor",
"m28 arpeggio momentum continues"
],
"teaching_goals": [
"the C section is the ... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 25–28 of Fur Elise (Bagatelle No. 25 in A minor), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 25–28 of Für El... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
fur-elise:m029-032:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Fur Elise (Bagatelle No. 25 in A minor)",
"composer": "Ludwig van Beethoven",
"composition_year": 1810,
"composition_pd_status_us": "public_domain",
"compo... | {
"song_id": "fur-elise",
"phrase_window": "measures 29-32",
"instrument": "piano",
"key": "A minor",
"tempo_bpm": 69,
"time_signature": "3/8",
"window_role": "continuation_target",
"musical_phrase_label": "C section — contrasting consequent",
"natural_phrase_boundary": true,
"paired_prompt_record_i... | {
"midi_sidecar": {
"midi_sha256": "a1481bdafe94d33e0de8934c97aec45534c908bc797bae7293f626074aec2e07",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 36.426713,
"t_ticks": 20160,
"dur_seconds": 0.216826,
"dur_ticks": 120,
"note": 45,
"name": "... | {
"measure_range": [
29,
32
],
"structure": "C section consequent — flowing arpeggios, open harmonic exploration",
"key_moments": [
"m29 arpeggios continue flowing",
"m31 harmonic area explored",
"m32 continued C section character"
],
"teaching_goals": [
"the arpeggios should feel fr... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 29–32 of Fur Elise (Bagatelle No. 25 in A minor) (continuation of mm. 25–28), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 29–32 and describe the cont... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
fur-elise:m033-036:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Fur Elise (Bagatelle No. 25 in A minor)",
"composer": "Ludwig van Beethoven",
"composition_year": 1810,
"composition_pd_status_us": "public_domain",
"compo... | {
"song_id": "fur-elise",
"phrase_window": "measures 33-36",
"instrument": "piano",
"key": "A minor",
"tempo_bpm": 69,
"time_signature": "3/8",
"window_role": "prompt",
"musical_phrase_label": "C section — development antecedent",
"natural_phrase_boundary": true,
"continuation_target_window": [
... | {
"midi_sidecar": {
"midi_sha256": "a1481bdafe94d33e0de8934c97aec45534c908bc797bae7293f626074aec2e07",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 41.630529,
"t_ticks": 23040,
"dur_seconds": 0.216826,
"dur_ticks": 120,
"note": 43,
"name": "... | {
"measure_range": [
33,
36
],
"structure": "C section development antecedent — arpeggios continue, developmental momentum",
"key_moments": [
"m33 development of C section",
"m35 harmonic movement continues",
"m36 forward momentum"
],
"teaching_goals": [
"feel the developmental quali... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 33–36 of Fur Elise (Bagatelle No. 25 in A minor), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 33–36 of Für El... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
fur-elise:m037-040:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Fur Elise (Bagatelle No. 25 in A minor)",
"composer": "Ludwig van Beethoven",
"composition_year": 1810,
"composition_pd_status_us": "public_domain",
"compo... | {
"song_id": "fur-elise",
"phrase_window": "measures 37-40",
"instrument": "piano",
"key": "A minor",
"tempo_bpm": 69,
"time_signature": "3/8",
"window_role": "continuation_target",
"musical_phrase_label": "C section — development consequent",
"natural_phrase_boundary": true,
"paired_prompt_record_i... | {
"midi_sidecar": {
"midi_sha256": "a1481bdafe94d33e0de8934c97aec45534c908bc797bae7293f626074aec2e07",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 46.834345,
"t_ticks": 25920,
"dur_seconds": 0.162619,
"dur_ticks": 90,
"note": 76,
"name": "E... | {
"measure_range": [
37,
40
],
"structure": "C section closing antecedent — arpeggios prepare A theme return",
"key_moments": [
"m37 approach to A theme return",
"m39 harmonic preparation",
"m40 dominant of A minor approaching"
],
"teaching_goals": [
"sense the returning A theme — th... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 37–40 of Fur Elise (Bagatelle No. 25 in A minor) (continuation of mm. 33–36), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 37–40 and describe the cont... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
fur-elise:m041-044:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Fur Elise (Bagatelle No. 25 in A minor)",
"composer": "Ludwig van Beethoven",
"composition_year": 1810,
"composition_pd_status_us": "public_domain",
"compo... | {
"song_id": "fur-elise",
"phrase_window": "measures 41-44",
"instrument": "piano",
"key": "A minor",
"tempo_bpm": 69,
"time_signature": "3/8",
"window_role": "prompt",
"musical_phrase_label": "A theme third return — antecedent",
"natural_phrase_boundary": true,
"continuation_target_window": [
4... | {
"midi_sidecar": {
"midi_sha256": "a1481bdafe94d33e0de8934c97aec45534c908bc797bae7293f626074aec2e07",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 52.038161,
"t_ticks": 28800,
"dur_seconds": 0.216826,
"dur_ticks": 120,
"note": 45,
"name": "... | {
"measure_range": [
41,
44
],
"structure": "Third A theme return antecedent — oscillating figure returns, deepened by context",
"key_moments": [
"m41 third A theme return",
"m43 oscillation familiar",
"m44 accumlated context of three hearings"
],
"teaching_goals": [
"each rondo retu... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 41–44 of Fur Elise (Bagatelle No. 25 in A minor), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 41–44 of Für El... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
fur-elise:m045-048:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Fur Elise (Bagatelle No. 25 in A minor)",
"composer": "Ludwig van Beethoven",
"composition_year": 1810,
"composition_pd_status_us": "public_domain",
"compo... | {
"song_id": "fur-elise",
"phrase_window": "measures 45-48",
"instrument": "piano",
"key": "A minor",
"tempo_bpm": 69,
"time_signature": "3/8",
"window_role": "continuation_target",
"musical_phrase_label": "A theme third return — consequent",
"natural_phrase_boundary": true,
"paired_prompt_record_id... | {
"midi_sidecar": {
"midi_sha256": "a1481bdafe94d33e0de8934c97aec45534c908bc797bae7293f626074aec2e07",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 57.241977,
"t_ticks": 31680,
"dur_seconds": 0.216826,
"dur_ticks": 120,
"note": 45,
"name": "... | {
"measure_range": [
45,
48
],
"structure": "Third A theme return consequent — oscillation continues",
"key_moments": [
"m45 oscillation continues",
"m47 patient rocking motion",
"m48 cadential approach"
],
"teaching_goals": [
"patience is the virtue here — the rondo teaches through ... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 45–48 of Fur Elise (Bagatelle No. 25 in A minor) (continuation of mm. 41–44), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 45–48 and describe the cont... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
fur-elise:m057-060:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Fur Elise (Bagatelle No. 25 in A minor)",
"composer": "Ludwig van Beethoven",
"composition_year": 1810,
"composition_pd_status_us": "public_domain",
"compo... | {
"song_id": "fur-elise",
"phrase_window": "measures 57-60",
"instrument": "piano",
"key": "A minor",
"tempo_bpm": 69,
"time_signature": "3/8",
"window_role": "prompt",
"musical_phrase_label": "late return — antecedent",
"natural_phrase_boundary": true,
"continuation_target_window": [
61,
64... | {
"midi_sidecar": {
"midi_sha256": "a1481bdafe94d33e0de8934c97aec45534c908bc797bae7293f626074aec2e07",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 72.853426,
"t_ticks": 40320,
"dur_seconds": 0.433651,
"dur_ticks": 240,
"note": 56,
"name": "... | {
"measure_range": [
57,
60
],
"structure": "Late rondo return antecedent — oscillating material in final section",
"key_moments": [
"m57 late rondo appearance",
"m59 material familiar",
"m60 phrase momentum"
],
"teaching_goals": [
"the late section returns carry the weight of the en... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 57–60 of Fur Elise (Bagatelle No. 25 in A minor), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 57–60 of Für El... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
fur-elise:m061-064:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Fur Elise (Bagatelle No. 25 in A minor)",
"composer": "Ludwig van Beethoven",
"composition_year": 1810,
"composition_pd_status_us": "public_domain",
"compo... | {
"song_id": "fur-elise",
"phrase_window": "measures 61-64",
"instrument": "piano",
"key": "A minor",
"tempo_bpm": 69,
"time_signature": "3/8",
"window_role": "continuation_target",
"musical_phrase_label": "late return — consequent",
"natural_phrase_boundary": true,
"paired_prompt_record_id": "fur-e... | {
"midi_sidecar": {
"midi_sha256": "a1481bdafe94d33e0de8934c97aec45534c908bc797bae7293f626074aec2e07",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 78.057242,
"t_ticks": 43200,
"dur_seconds": 0.216826,
"dur_ticks": 120,
"note": 76,
"name": "... | {
"measure_range": [
61,
64
],
"structure": "Late rondo consequent — approaching the conclusion",
"key_moments": [
"m61 continuation of late material",
"m63 approaching conclusion",
"m64 final direction"
],
"teaching_goals": [
"the rondo is approaching its conclusion — the piece is c... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 61–64 of Fur Elise (Bagatelle No. 25 in A minor) (continuation of mm. 57–60), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 61–64 and describe the cont... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
mozart-k545-mvt1:m001-004:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Piano Sonata No. 16 in C Major, K. 545, I. Allegro",
"composer": "Wolfgang Amadeus Mozart",
"composition_year": 1788,
"composition_pd_status_us": "public_dom... | {
"song_id": "mozart-k545-mvt1",
"phrase_window": "measures 1-4",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 137,
"time_signature": "4/4",
"window_role": "prompt",
"continuation_target_window": [
5,
8
],
"musical_phrase_label": "opening theme antecedent",
"natural_phrase_boundar... | {
"midi_sidecar": {
"midi_sha256": "010bd27e25904822e04a51f207083722e469fccb0b446ce5545fbd37378268bf",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 0,
"t_ticks": 0,
"dur_seconds": 0.219716,
"dur_ticks": 240,
"note": 60,
"name": "C4",
... | {
"measure_range": [
1,
4
],
"structure": "Opening theme — ascending C major scale statement (m.1) followed by melodic response over Alberti bass (mm. 2–4)",
"key_moments": [
"m1 iconic ascending scale C5→C6 — tonic statement",
"m2 melodic E5→B4 descent over Alberti bass (G-C-E pattern)",
"m... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 1–4 of Mozart K545 Movement 1, view the piano roll, analyze the opening theme, play the phrase in a loop, then produce a phrase annotation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Read measures 1–4 of Mozart's... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
mozart-k545-mvt1:m005-008:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Piano Sonata No. 16 in C Major, K. 545, I. Allegro",
"composer": "Wolfgang Amadeus Mozart",
"composition_year": 1788,
"composition_pd_status_us": "public_dom... | {
"song_id": "mozart-k545-mvt1",
"phrase_window": "measures 5-8",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 137,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "opening theme — consequent, period close",
"natural_phrase_boundary": true,
"paired_pro... | {
"midi_sidecar": {
"midi_sha256": "010bd27e25904822e04a51f207083722e469fccb0b446ce5545fbd37378268bf",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 7.030907,
"t_ticks": 7680,
"dur_seconds": 0.439432,
"dur_ticks": 480,
"note": 65,
"name": "F4... | {
"measure_range": [
5,
8
],
"structure": "Opening theme consequent — resolves to tonic C, completes 8-bar period",
"key_moments": [
"m5 theme restatement from dominant",
"m7 descending resolution",
"m8 tonic C — period complete"
],
"teaching_goals": [
"feel the resolution as complet... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 5–8 of Piano Sonata No. 16 in C Major, K. 545, I. Allegro (continuation of mm. 1–4), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 5–8 and explain how ... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
mozart-k545-mvt1:m009-012:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Piano Sonata No. 16 in C Major, K. 545, I. Allegro",
"composer": "Wolfgang Amadeus Mozart",
"composition_year": 1788,
"composition_pd_status_us": "public_dom... | {
"song_id": "mozart-k545-mvt1",
"phrase_window": "measures 9-12",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 137,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "transition — moving toward dominant",
"natural_phrase_boundary": true,
"continuation_target_window"... | {
"midi_sidecar": {
"midi_sha256": "010bd27e25904822e04a51f207083722e469fccb0b446ce5545fbd37378268bf",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 14.061813,
"t_ticks": 15360,
"dur_seconds": 1.757727,
"dur_ticks": 1920,
"note": 53,
"name": ... | {
"measure_range": [
9,
12
],
"structure": "Transition — sequential motion from C toward dominant G",
"key_moments": [
"m9 transition begins",
"m11 sequential scale passages",
"m12 dominant preparation"
],
"teaching_goals": [
"feel the modulation — notice when G major becomes more pr... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 9–12 of Piano Sonata No. 16 in C Major, K. 545, I. Allegro, view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 9–12 ... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
mozart-k545-mvt1:m013-016:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Piano Sonata No. 16 in C Major, K. 545, I. Allegro",
"composer": "Wolfgang Amadeus Mozart",
"composition_year": 1788,
"composition_pd_status_us": "public_dom... | {
"song_id": "mozart-k545-mvt1",
"phrase_window": "measures 13-16",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 137,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "second theme — dominant G major",
"natural_phrase_boundary": true,
"paired_prompt_rec... | {
"midi_sidecar": {
"midi_sha256": "010bd27e25904822e04a51f207083722e469fccb0b446ce5545fbd37378268bf",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 21.09272,
"t_ticks": 23040,
"dur_seconds": 0.120844,
"dur_ticks": 132,
"note": 61,
"name": "C... | {
"measure_range": [
13,
16
],
"structure": "Second theme in G major — lighter, playful character",
"key_moments": [
"m13 G major second theme enters",
"m15 decorated top voice",
"m16 dominant D in G major — open"
],
"teaching_goals": [
"new theme character: lighter and more playful ... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 13–16 of Piano Sonata No. 16 in C Major, K. 545, I. Allegro (continuation of mm. 9–12), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 13–16 and describ... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
mozart-k545-mvt1:m017-020:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Piano Sonata No. 16 in C Major, K. 545, I. Allegro",
"composer": "Wolfgang Amadeus Mozart",
"composition_year": 1788,
"composition_pd_status_us": "public_dom... | {
"song_id": "mozart-k545-mvt1",
"phrase_window": "measures 17-20",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 137,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "second theme continuation — antecedent",
"natural_phrase_boundary": true,
"continuation_target_win... | {
"midi_sidecar": {
"midi_sha256": "010bd27e25904822e04a51f207083722e469fccb0b446ce5545fbd37378268bf",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 28.123627,
"t_ticks": 30720,
"dur_seconds": 0.109858,
"dur_ticks": 120,
"note": 60,
"name": "... | {
"measure_range": [
17,
20
],
"structure": "Second theme continuation antecedent — G major playful melody",
"key_moments": [
"m17 second theme continues in G",
"m19 decorated melody",
"m20 cadential approach"
],
"teaching_goals": [
"maintain the lighter, more playful character of th... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 17–20 of Piano Sonata No. 16 in C Major, K. 545, I. Allegro, view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 17–2... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
mozart-k545-mvt1:m021-024:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Piano Sonata No. 16 in C Major, K. 545, I. Allegro",
"composer": "Wolfgang Amadeus Mozart",
"composition_year": 1788,
"composition_pd_status_us": "public_dom... | {
"song_id": "mozart-k545-mvt1",
"phrase_window": "measures 21-24",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 137,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "second theme continuation — consequent",
"natural_phrase_boundary": true,
"paired_pro... | {
"midi_sidecar": {
"midi_sha256": "010bd27e25904822e04a51f207083722e469fccb0b446ce5545fbd37378268bf",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 35.154533,
"t_ticks": 38400,
"dur_seconds": 0.439432,
"dur_ticks": 480,
"note": 81,
"name": "... | {
"measure_range": [
21,
24
],
"structure": "Second theme consequent — G major cadential approach",
"key_moments": [
"m21 cadential figures approach",
"m23 G major cadence",
"m24 tonic G arrival"
],
"teaching_goals": [
"feel the G major cadence as a local tonic — satisfying but tempo... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 21–24 of Piano Sonata No. 16 in C Major, K. 545, I. Allegro (continuation of mm. 17–20), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 21–24 and descri... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
mozart-k545-mvt1:m025-028:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Piano Sonata No. 16 in C Major, K. 545, I. Allegro",
"composer": "Wolfgang Amadeus Mozart",
"composition_year": 1788,
"composition_pd_status_us": "public_dom... | {
"song_id": "mozart-k545-mvt1",
"phrase_window": "measures 25-28",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 137,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "exposition close — antecedent",
"natural_phrase_boundary": true,
"continuation_target_window": [
... | {
"midi_sidecar": {
"midi_sha256": "010bd27e25904822e04a51f207083722e469fccb0b446ce5545fbd37378268bf",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 42.18544,
"t_ticks": 46080,
"dur_seconds": 0.109858,
"dur_ticks": 120,
"note": 62,
"name": "D... | {
"measure_range": [
25,
28
],
"structure": "Exposition closing antecedent — G major cadential gestures",
"key_moments": [
"m25 closing figures in G",
"m27 cadential momentum",
"m28 formal close approaching"
],
"teaching_goals": [
"feel the sense of formal completion as the expositio... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 25–28 of Piano Sonata No. 16 in C Major, K. 545, I. Allegro, view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 25–2... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
mozart-k545-mvt1:m029-032:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Piano Sonata No. 16 in C Major, K. 545, I. Allegro",
"composer": "Wolfgang Amadeus Mozart",
"composition_year": 1788,
"composition_pd_status_us": "public_dom... | {
"song_id": "mozart-k545-mvt1",
"phrase_window": "measures 29-32",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 137,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "exposition close — consequent",
"natural_phrase_boundary": true,
"paired_prompt_recor... | {
"midi_sidecar": {
"midi_sha256": "010bd27e25904822e04a51f207083722e469fccb0b446ce5545fbd37378268bf",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 49.216347,
"t_ticks": 53760,
"dur_seconds": 0.219716,
"dur_ticks": 240,
"note": 60,
"name": "... | {
"measure_range": [
29,
32
],
"structure": "Exposition close consequent — final G major cadences",
"key_moments": [
"m29 final cadential gesture",
"m31 G major resolution",
"m32 exposition complete"
],
"teaching_goals": [
"the exposition close is a structural landmark — feel its wei... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 29–32 of Piano Sonata No. 16 in C Major, K. 545, I. Allegro (continuation of mm. 25–28), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 29–32 and descri... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
mozart-k545-mvt1:m033-036:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Piano Sonata No. 16 in C Major, K. 545, I. Allegro",
"composer": "Wolfgang Amadeus Mozart",
"composition_year": 1788,
"composition_pd_status_us": "public_dom... | {
"song_id": "mozart-k545-mvt1",
"phrase_window": "measures 33-36",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 137,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "development section — antecedent",
"natural_phrase_boundary": true,
"continuation_target_window": ... | {
"midi_sidecar": {
"midi_sha256": "010bd27e25904822e04a51f207083722e469fccb0b446ce5545fbd37378268bf",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 56.247254,
"t_ticks": 61440,
"dur_seconds": 0.439432,
"dur_ticks": 480,
"note": 65,
"name": "... | {
"measure_range": [
33,
36
],
"structure": "Development antecedent — thematic material transformed, harmonic movement",
"key_moments": [
"m33 development begins",
"m35 thematic material transformed",
"m36 harmonic direction"
],
"teaching_goals": [
"the development is purposeful — no... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 33–36 of Piano Sonata No. 16 in C Major, K. 545, I. Allegro, view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 33–3... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
mozart-k545-mvt1:m037-040:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Piano Sonata No. 16 in C Major, K. 545, I. Allegro",
"composer": "Wolfgang Amadeus Mozart",
"composition_year": 1788,
"composition_pd_status_us": "public_dom... | {
"song_id": "mozart-k545-mvt1",
"phrase_window": "measures 37-40",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 137,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "development section — consequent",
"natural_phrase_boundary": true,
"paired_prompt_re... | {
"midi_sidecar": {
"midi_sha256": "010bd27e25904822e04a51f207083722e469fccb0b446ce5545fbd37378268bf",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 63.27816,
"t_ticks": 69120,
"dur_seconds": 1.757727,
"dur_ticks": 1920,
"note": 53,
"name": "... | {
"measure_range": [
37,
40
],
"structure": "Development consequent — building toward recapitulation",
"key_moments": [
"m37 momentum builds",
"m39 dominant preparation begins",
"m40 recapitulation approaching"
],
"teaching_goals": [
"feel the harmonic momentum building toward the re... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 37–40 of Piano Sonata No. 16 in C Major, K. 545, I. Allegro (continuation of mm. 33–36), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 37–40 and descri... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
mozart-k545-mvt1:m057-060:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Piano Sonata No. 16 in C Major, K. 545, I. Allegro",
"composer": "Wolfgang Amadeus Mozart",
"composition_year": 1788,
"composition_pd_status_us": "public_dom... | {
"song_id": "mozart-k545-mvt1",
"phrase_window": "measures 57-60",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 137,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "recapitulation — second theme antecedent",
"natural_phrase_boundary": true,
"continuation_target_w... | {
"midi_sidecar": {
"midi_sha256": "010bd27e25904822e04a51f207083722e469fccb0b446ce5545fbd37378268bf",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 98.432694,
"t_ticks": 107520,
"dur_seconds": 0.439432,
"dur_ticks": 480,
"note": 43,
"name": ... | {
"measure_range": [
57,
60
],
"structure": "Recapitulation second theme antecedent — now in tonic C (was G)",
"key_moments": [
"m57 second theme returns but now in C",
"m59 tonic resolution in the theme itself",
"m60 structural satisfaction of sonata form"
],
"teaching_goals": [
"re... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 57–60 of Piano Sonata No. 16 in C Major, K. 545, I. Allegro, view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 57–6... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
mozart-k545-mvt1:m061-064:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Piano Sonata No. 16 in C Major, K. 545, I. Allegro",
"composer": "Wolfgang Amadeus Mozart",
"composition_year": 1788,
"composition_pd_status_us": "public_dom... | {
"song_id": "mozart-k545-mvt1",
"phrase_window": "measures 61-64",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 137,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "recapitulation — second theme consequent",
"natural_phrase_boundary": true,
"paired_p... | {
"midi_sidecar": {
"midi_sha256": "010bd27e25904822e04a51f207083722e469fccb0b446ce5545fbd37378268bf",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 105.4636,
"t_ticks": 115200,
"dur_seconds": 0.439432,
"dur_ticks": 480,
"note": 38,
"name": "... | {
"measure_range": [
61,
64
],
"structure": "Recapitulation second theme consequent — C major, completing the form",
"key_moments": [
"m61 theme continues in C",
"m63 C major cadential approach",
"m64 tonic C arrival"
],
"teaching_goals": [
"feel the form completing — the second them... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 61–64 of Piano Sonata No. 16 in C Major, K. 545, I. Allegro (continuation of mm. 57–60), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 61–64 and descri... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
mozart-k545-mvt1:m073-076:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Piano Sonata No. 16 in C Major, K. 545, I. Allegro",
"composer": "Wolfgang Amadeus Mozart",
"composition_year": 1788,
"composition_pd_status_us": "public_dom... | {
"song_id": "mozart-k545-mvt1",
"phrase_window": "measures 73-76",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 137,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "recapitulation close — antecedent",
"natural_phrase_boundary": true,
"continuation_target_window":... | {
"midi_sidecar": {
"midi_sha256": "010bd27e25904822e04a51f207083722e469fccb0b446ce5545fbd37378268bf",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 126.55632,
"t_ticks": 138240,
"dur_seconds": 0.219716,
"dur_ticks": 240,
"note": 64,
"name": ... | {
"measure_range": [
73,
76
],
"structure": "Recapitulation closing antecedent — C major cadential gestures",
"key_moments": [
"m73 closing figures in C major",
"m75 cadential momentum",
"m76 formal close approaching"
],
"teaching_goals": [
"same closing gestures as the exposition bu... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 73–76 of Piano Sonata No. 16 in C Major, K. 545, I. Allegro, view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 73–7... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
mozart-k545-mvt1:m077-080:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Piano Sonata No. 16 in C Major, K. 545, I. Allegro",
"composer": "Wolfgang Amadeus Mozart",
"composition_year": 1788,
"composition_pd_status_us": "public_dom... | {
"song_id": "mozart-k545-mvt1",
"phrase_window": "measures 77-80",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 137,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "recapitulation close — consequent",
"natural_phrase_boundary": true,
"paired_prompt_r... | {
"midi_sidecar": {
"midi_sha256": "010bd27e25904822e04a51f207083722e469fccb0b446ce5545fbd37378268bf",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 133.587227,
"t_ticks": 145920,
"dur_seconds": 0.439432,
"dur_ticks": 480,
"note": 53,
"name":... | {
"measure_range": [
77,
80
],
"structure": "Recapitulation final cadences — C major, form complete",
"key_moments": [
"m77 final recapitulation cadence",
"m79 C major tonic confirmed",
"m80 recapitulation complete"
],
"teaching_goals": [
"the recapitulation is complete — the form ha... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 77–80 of Piano Sonata No. 16 in C Major, K. 545, I. Allegro (continuation of mm. 73–76), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 77–80 and descri... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
mozart-k545-mvt1:m081-084:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Piano Sonata No. 16 in C Major, K. 545, I. Allegro",
"composer": "Wolfgang Amadeus Mozart",
"composition_year": 1788,
"composition_pd_status_us": "public_dom... | {
"song_id": "mozart-k545-mvt1",
"phrase_window": "measures 81-84",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 137,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "coda — antecedent",
"natural_phrase_boundary": true,
"continuation_target_window": [
85,
8... | {
"midi_sidecar": {
"midi_sha256": "010bd27e25904822e04a51f207083722e469fccb0b446ce5545fbd37378268bf",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 140.618134,
"t_ticks": 153600,
"dur_seconds": 0.219716,
"dur_ticks": 240,
"note": 48,
"name":... | {
"measure_range": [
81,
84
],
"structure": "Coda antecedent — tonic C reinforcement, final melodic statements",
"key_moments": [
"m81 coda begins",
"m83 final melodic statements",
"m84 approaching the end"
],
"teaching_goals": [
"the coda is the final confirmation — enjoy the home k... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 81–84 of Piano Sonata No. 16 in C Major, K. 545, I. Allegro, view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 81–8... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
mozart-k545-mvt1:m085-088:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Piano Sonata No. 16 in C Major, K. 545, I. Allegro",
"composer": "Wolfgang Amadeus Mozart",
"composition_year": 1788,
"composition_pd_status_us": "public_dom... | {
"song_id": "mozart-k545-mvt1",
"phrase_window": "measures 85-88",
"instrument": "piano",
"key": "C major",
"tempo_bpm": 137,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "coda — consequent",
"natural_phrase_boundary": true,
"paired_prompt_record_id": "moza... | {
"midi_sidecar": {
"midi_sha256": "010bd27e25904822e04a51f207083722e469fccb0b446ce5545fbd37378268bf",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 147.649041,
"t_ticks": 161280,
"dur_seconds": 0.109858,
"dur_ticks": 120,
"note": 43,
"name":... | {
"measure_range": [
85,
88
],
"structure": "Coda consequent — final C major cadences, clean conclusion",
"key_moments": [
"m85 final cadential gestures",
"m87 penultimate cadence",
"m88 final C major arrival"
],
"teaching_goals": [
"the movement ends cleanly and simply — no lingerin... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 85–88 of Piano Sonata No. 16 in C Major, K. 545, I. Allegro (continuation of mm. 81–84), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 85–88 and descri... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
pathetique-mvt2:m001-004:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Pathetique Sonata, 2nd Movement (Adagio cantabile)",
"composer": "Ludwig van Beethoven",
"composition_year": 1799,
"composition_pd_status_us": "public_domain... | {
"song_id": "pathetique-mvt2",
"phrase_window": "measures 1-4",
"instrument": "piano",
"key": "Ab major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "Adagio cantabile opening antecedent — sparse RH theme over rocking LH arpeggio",
"natural_phrase_bound... | {
"midi_sidecar": {
"midi_sha256": "86ca5c4927c49686987aaa13ff36f5c562d7b091e509e898dbf9d4c2cdb6a3a4",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 1.998958,
"t_ticks": 1919,
"dur_seconds": 2.35,
"dur_ticks": 2256,
"note": 60,
"name": "C4",
... | {
"measure_range": [
1,
4
],
"structure": "Opening antecedent of the Adagio cantabile (paired continuation at m. 5–8). The right hand is exceptionally sparse — only two pitches sound across the four bars (C4 at m. 1 b3.9979 and D#4 at m. 3 b3.9354, both at the very end of their measures as upbeat-pickup l... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 1–4 of Pathetique Sonata, 2nd Movement (Adagio cantabile), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 1–4 of... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
pathetique-mvt2:m005-008:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Pathetique Sonata, 2nd Movement (Adagio cantabile)",
"composer": "Ludwig van Beethoven",
"composition_year": 1799,
"composition_pd_status_us": "public_domain... | {
"song_id": "pathetique-mvt2",
"phrase_window": "measures 5-8",
"instrument": "piano",
"key": "Ab major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "Adagio cantabile — consequent, period close",
"natural_phrase_boundary": true,
"paired_... | {
"midi_sidecar": {
"midi_sha256": "86ca5c4927c49686987aaa13ff36f5c562d7b091e509e898dbf9d4c2cdb6a3a4",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 8.007292,
"t_ticks": 7687,
"dur_seconds": 1.860417,
"dur_ticks": 1786,
"note": 43,
"name": "G... | {
"measure_range": [
5,
8
],
"structure": "Consequent — peaceful Ab tonic arrival, period complete",
"key_moments": [
"m5 melody continues toward resolution",
"m7 final melodic descent",
"m8 tonic Ab — peaceful arrival"
],
"teaching_goals": [
"feel the resolution as a gentle arrival,... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 5–8 of Pathetique Sonata, 2nd Movement (Adagio cantabile) (continuation of mm. 1–4), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 5–8 and describe how... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
pathetique-mvt2:m009-012:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Pathetique Sonata, 2nd Movement (Adagio cantabile)",
"composer": "Ludwig van Beethoven",
"composition_year": 1799,
"composition_pd_status_us": "public_domain... | {
"song_id": "pathetique-mvt2",
"phrase_window": "measures 9-12",
"instrument": "piano",
"key": "Ab major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "development — theme elaboration",
"natural_phrase_boundary": true,
"continuation_target_window": [
... | {
"midi_sidecar": {
"midi_sha256": "86ca5c4927c49686987aaa13ff36f5c562d7b091e509e898dbf9d4c2cdb6a3a4",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 16.011458,
"t_ticks": 15371,
"dur_seconds": 0.210417,
"dur_ticks": 202,
"note": 58,
"name": "... | {
"measure_range": [
9,
12
],
"structure": "Development — theme embellished, melody rises, harmonic movement",
"key_moments": [
"m9 theme restatement with embellishment",
"m11 melody climbs to higher register",
"m12 developmental harmonic movement"
],
"teaching_goals": [
"embellishme... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 9–12 of Pathetique Sonata, 2nd Movement (Adagio cantabile), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 9–12 ... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
pathetique-mvt2:m013-016:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Pathetique Sonata, 2nd Movement (Adagio cantabile)",
"composer": "Ludwig van Beethoven",
"composition_year": 1799,
"composition_pd_status_us": "public_domain... | {
"song_id": "pathetique-mvt2",
"phrase_window": "measures 13-16",
"instrument": "piano",
"key": "Ab major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "development continuation — return to stability",
"natural_phrase_boundary": true,
"pa... | {
"midi_sidecar": {
"midi_sha256": "86ca5c4927c49686987aaa13ff36f5c562d7b091e509e898dbf9d4c2cdb6a3a4",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 24.301042,
"t_ticks": 23329,
"dur_seconds": 0.54375,
"dur_ticks": 522,
"note": 51,
"name": "D... | {
"measure_range": [
13,
16
],
"structure": "Development return — melody settles, peaceful resolution",
"key_moments": [
"m13 descent from development",
"m15 settling harmonic area",
"m16 stable close"
],
"teaching_goals": [
"the descent from development should feel like an exhale",
... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 13–16 of Pathetique Sonata, 2nd Movement (Adagio cantabile) (continuation of mm. 9–12), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 13–16 and describ... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
pathetique-mvt2:m017-020:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Pathetique Sonata, 2nd Movement (Adagio cantabile)",
"composer": "Ludwig van Beethoven",
"composition_year": 1799,
"composition_pd_status_us": "public_domain... | {
"song_id": "pathetique-mvt2",
"phrase_window": "measures 17-20",
"instrument": "piano",
"key": "Ab major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "second period — antecedent",
"natural_phrase_boundary": true,
"continuation_target_window": [
... | {
"midi_sidecar": {
"midi_sha256": "86ca5c4927c49686987aaa13ff36f5c562d7b091e509e898dbf9d4c2cdb6a3a4",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 32.355208,
"t_ticks": 31061,
"dur_seconds": 0.433333,
"dur_ticks": 416,
"note": 51,
"name": "... | {
"measure_range": [
17,
20
],
"structure": "Second period antecedent — cantabile theme with slightly varied harmony",
"key_moments": [
"m17 theme restatement with variation",
"m19 harmonic color slightly different",
"m20 dominant approach"
],
"teaching_goals": [
"feel the variation ... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 17–20 of Pathetique Sonata, 2nd Movement (Adagio cantabile), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 17–2... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
pathetique-mvt2:m021-024:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Pathetique Sonata, 2nd Movement (Adagio cantabile)",
"composer": "Ludwig van Beethoven",
"composition_year": 1799,
"composition_pd_status_us": "public_domain... | {
"song_id": "pathetique-mvt2",
"phrase_window": "measures 21-24",
"instrument": "piano",
"key": "Ab major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "second period — consequent",
"natural_phrase_boundary": true,
"paired_prompt_record_i... | {
"midi_sidecar": {
"midi_sha256": "86ca5c4927c49686987aaa13ff36f5c562d7b091e509e898dbf9d4c2cdb6a3a4",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 40.128125,
"t_ticks": 38523,
"dur_seconds": 1.48125,
"dur_ticks": 1422,
"note": 43,
"name": "... | {
"measure_range": [
21,
24
],
"structure": "Second period consequent — peaceful resolution",
"key_moments": [
"m21 theme continues",
"m23 tonic approach",
"m24 peaceful Ab arrival"
],
"teaching_goals": [
"the second period close is as peaceful as the first",
"the Ab tonic is a r... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 21–24 of Pathetique Sonata, 2nd Movement (Adagio cantabile) (continuation of mm. 17–20), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 21–24 and descri... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
pathetique-mvt2:m025-028:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Pathetique Sonata, 2nd Movement (Adagio cantabile)",
"composer": "Ludwig van Beethoven",
"composition_year": 1799,
"composition_pd_status_us": "public_domain... | {
"song_id": "pathetique-mvt2",
"phrase_window": "measures 25-28",
"instrument": "piano",
"key": "Ab major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "Ab-minor middle episode antecedent — contrasting agitato over wandering bass",
"natural_phrase_bound... | {
"midi_sidecar": {
"midi_sha256": "86ca5c4927c49686987aaa13ff36f5c562d7b091e509e898dbf9d4c2cdb6a3a4",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 48.369792,
"t_ticks": 46435,
"dur_seconds": 1.189583,
"dur_ticks": 1142,
"note": 76,
"name": ... | {
"measure_range": [
25,
28
],
"structure": "Contrasting middle episode (parallel A♭ minor) — antecedent of the 4-bar pair m. 25–32. Right-hand top voice peaks at F5 (m. 25 b2.6) over a wandering bass that moves G3 → C#2 (=D♭2) → G2 → A#2 (=B♭2). The texture is busier than the surrounding A♭-major cantabi... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 25–28 of Pathetique Sonata, 2nd Movement (Adagio cantabile), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 25–2... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
pathetique-mvt2:m029-032:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Pathetique Sonata, 2nd Movement (Adagio cantabile)",
"composer": "Ludwig van Beethoven",
"composition_year": 1799,
"composition_pd_status_us": "public_domain... | {
"song_id": "pathetique-mvt2",
"phrase_window": "measures 29-32",
"instrument": "piano",
"key": "Ab major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "Ab-minor middle episode consequent — dominant pedal preparing the cantabile return",
"n... | {
"midi_sidecar": {
"midi_sha256": "86ca5c4927c49686987aaa13ff36f5c562d7b091e509e898dbf9d4c2cdb6a3a4",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 56.315625,
"t_ticks": 54063,
"dur_seconds": 0.370833,
"dur_ticks": 356,
"note": 63,
"name": "... | {
"measure_range": [
29,
32
],
"structure": "Consequent of the A♭-minor middle episode (paired continuation of m. 25–28). The right-hand line winds through D#4 (E♭4) → C4 → C#5 (D♭5) → C#4 (D♭4) → F4 → C5 → B♭4 → A♭4 (G#4) before settling on a long G#4 (A♭4) at m. 32 b3.3. Under the surface, the left hand... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 29–32 of Pathetique Sonata, 2nd Movement (Adagio cantabile) (continuation of mm. 25–28), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 29–32 and descri... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
pathetique-mvt2:m033-036:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Pathetique Sonata, 2nd Movement (Adagio cantabile)",
"composer": "Ludwig van Beethoven",
"composition_year": 1799,
"composition_pd_status_us": "public_domain... | {
"song_id": "pathetique-mvt2",
"phrase_window": "measures 33-36",
"instrument": "piano",
"key": "Ab major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "theme return — antecedent",
"natural_phrase_boundary": true,
"continuation_target_window": [
3... | {
"midi_sidecar": {
"midi_sha256": "86ca5c4927c49686987aaa13ff36f5c562d7b091e509e898dbf9d4c2cdb6a3a4",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 65.671875,
"t_ticks": 63045,
"dur_seconds": 0.597917,
"dur_ticks": 574,
"note": 60,
"name": "... | {
"measure_range": [
33,
36
],
"structure": "Main theme return antecedent — cantabile resumes, Ab major",
"key_moments": [
"m33 cantabile theme returns",
"m35 rocking LH resumes",
"m36 familiar phrase shape"
],
"teaching_goals": [
"feel the return as a relief after the episode's agit... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 33–36 of Pathetique Sonata, 2nd Movement (Adagio cantabile), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 33–3... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
pathetique-mvt2:m037-040:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Pathetique Sonata, 2nd Movement (Adagio cantabile)",
"composer": "Ludwig van Beethoven",
"composition_year": 1799,
"composition_pd_status_us": "public_domain... | {
"song_id": "pathetique-mvt2",
"phrase_window": "measures 37-40",
"instrument": "piano",
"key": "Ab major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "theme return — consequent",
"natural_phrase_boundary": true,
"paired_prompt_record_id... | {
"midi_sidecar": {
"midi_sha256": "86ca5c4927c49686987aaa13ff36f5c562d7b091e509e898dbf9d4c2cdb6a3a4",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 72.455208,
"t_ticks": 69557,
"dur_seconds": 0.635417,
"dur_ticks": 610,
"note": 80,
"name": "... | {
"measure_range": [
37,
40
],
"structure": "Main theme return consequent — singing arc continues",
"key_moments": [
"m37 melody arc continues",
"m39 rocking LH steady",
"m40 phrase completes"
],
"teaching_goals": [
"the return feels completely settled now",
"the cantabile qualit... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 37–40 of Pathetique Sonata, 2nd Movement (Adagio cantabile) (continuation of mm. 33–36), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 37–40 and descri... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
pathetique-mvt2:m057-060:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Pathetique Sonata, 2nd Movement (Adagio cantabile)",
"composer": "Ludwig van Beethoven",
"composition_year": 1799,
"composition_pd_status_us": "public_domain... | {
"song_id": "pathetique-mvt2",
"phrase_window": "measures 57-60",
"instrument": "piano",
"key": "Ab major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "late section — antecedent",
"natural_phrase_boundary": true,
"continuation_target_window": [
6... | {
"midi_sidecar": {
"midi_sha256": "86ca5c4927c49686987aaa13ff36f5c562d7b091e509e898dbf9d4c2cdb6a3a4",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 112.405208,
"t_ticks": 107909,
"dur_seconds": 0.475,
"dur_ticks": 456,
"note": 51,
"name": "D... | {
"measure_range": [
57,
60
],
"structure": "Late section antecedent — deep cantabile, accumulated warmth",
"key_moments": [
"m57 late theme statement",
"m59 maximum expressive depth",
"m60 warmth accumulated from whole movement"
],
"teaching_goals": [
"the late section carries all t... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 57–60 of Pathetique Sonata, 2nd Movement (Adagio cantabile), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 57–6... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
pathetique-mvt2:m061-064:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Pathetique Sonata, 2nd Movement (Adagio cantabile)",
"composer": "Ludwig van Beethoven",
"composition_year": 1799,
"composition_pd_status_us": "public_domain... | {
"song_id": "pathetique-mvt2",
"phrase_window": "measures 61-64",
"instrument": "piano",
"key": "Ab major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "continuation_target",
"musical_phrase_label": "late section — consequent",
"natural_phrase_boundary": true,
"paired_prompt_record_id... | {
"midi_sidecar": {
"midi_sha256": "86ca5c4927c49686987aaa13ff36f5c562d7b091e509e898dbf9d4c2cdb6a3a4",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 120.042708,
"t_ticks": 115241,
"dur_seconds": 0.420833,
"dur_ticks": 404,
"note": 55,
"name":... | {
"measure_range": [
61,
64
],
"structure": "Late section consequent — maximum expressive depth",
"key_moments": [
"m61 melody at its deepest",
"m63 phrase completing",
"m64 resolution at maximum depth"
],
"teaching_goals": [
"the late section resolution carries more weight than the ... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 61–64 of Pathetique Sonata, 2nd Movement (Adagio cantabile) (continuation of mm. 57–60), analyze the musical continuation, play in a loop.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Play measures 61–64 and descri... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
pathetique-mvt2:m073-076:piano:mcp-session:v1 | jam-actions-v0/1.0.0 | {
"source_url": "http://piano-midi.de/",
"source_collected_at": "2026-05-16T00:00:00",
"source_type": "transcribed-by-author",
"composition_title": "Pathetique Sonata, 2nd Movement (Adagio cantabile)",
"composer": "Ludwig van Beethoven",
"composition_year": 1799,
"composition_pd_status_us": "public_domain... | {
"song_id": "pathetique-mvt2",
"phrase_window": "measures 73-76",
"instrument": "piano",
"key": "Ab major",
"tempo_bpm": 120,
"time_signature": "4/4",
"window_role": "prompt",
"musical_phrase_label": "final return — antecedent",
"natural_phrase_boundary": true,
"continuation_target_window": [
7... | {
"midi_sidecar": {
"midi_sha256": "86ca5c4927c49686987aaa13ff36f5c562d7b091e509e898dbf9d4c2cdb6a3a4",
"ticks_per_beat": 480,
"timed_events": [
{
"t_seconds": 144.401042,
"t_ticks": 138625,
"dur_seconds": 0.333333,
"dur_ticks": 320,
"note": 58,
"name":... | {
"measure_range": [
73,
76
],
"structure": "Final approach antecedent — dream-like depth, approaching conclusion",
"key_moments": [
"m73 final approach begins",
"m75 penultimate statements",
"m76 conclusion imminent"
],
"teaching_goals": [
"the movement is completing — the cantabile... | {
"task_family": "analyze-and-play-phrase",
"objective": "Read mm. 73–76 of Pathetique Sonata, 2nd Movement (Adagio cantabile), view the piano roll, analyze the phrase, play in a loop, and predict the continuation.",
"session": [
{
"turn": 1,
"role": "user",
"content": "Show me measures 73–7... | {
"split": "train",
"split_strategy": "stratified by (composer, composition_id) with MIDI byte-hash dedup",
"leakage_check": "pending",
"eval_eligibility": [
"E1_tool_use",
"E2_phrase_continuation",
"E3_annotation_grounding"
],
"phrase_continuation_eligible": true,
"phrase_continuation_eligibl... | train |
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