The dataset viewer is not available for this split.
Error code: FeaturesError
Exception: FileNotFoundError
Message: [Errno 2] No such file or directory: '<datasets.utils.file_utils.FilesIterable object at 0x7f37bdb29a90>'
Traceback: Traceback (most recent call last):
File "/src/services/worker/src/worker/job_runners/split/first_rows.py", line 244, in compute_first_rows_from_streaming_response
iterable_dataset = iterable_dataset._resolve_features()
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 4408, in _resolve_features
features = _infer_features_from_batch(self.with_format(None)._head())
~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2679, in _head
return next(iter(self.iter(batch_size=n)))
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2861, in iter
for key, pa_table in ex_iterable.iter_arrow():
~~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2395, in _iter_arrow
yield from self.ex_iterable._iter_arrow()
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 536, in _iter_arrow
for key, pa_table in iterator:
^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 419, in _iter_arrow
for key, pa_table in self.generate_tables_fn(**gen_kwags):
~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/xml/xml.py", line 67, in _generate_tables
with open(file, encoding=self.config.encoding, errors=self.config.encoding_errors) as f:
~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/streaming.py", line 73, in wrapper
return function(*args, download_config=download_config, **kwargs)
File "/usr/local/lib/python3.14/site-packages/datasets/utils/file_utils.py", line 967, in xopen
return open(main_hop, mode, *args, **kwargs)
FileNotFoundError: [Errno 2] No such file or directory: '<datasets.utils.file_utils.FilesIterable object at 0x7f37bdb29a90>'Need help to make the dataset viewer work? Make sure to review how to configure the dataset viewer, and open a discussion for direct support.
MAESTROCaps
MAESTROCaps contains 148 analyzed piano piece-recordings. Dataset package IDs are
consecutive from 001 through 148, ordered alphabetically by piece_key (composer, then
composition). Each metadata.json retains the prior ID as source_catalog_id, and
id-map.json records the complete mapping. Each directory under data/
contains the existing artifacts available for that record:
- original, annotated, and cleaned score XML files, plus existing score PDFs;
- existing all-assessed and accepted score-change reports;
- MuNo-S and MuNo-SP representations;
- the MuNo structural segmentation; and
- the segmentation-aware long-form auditory analysis.
The reusable generation prompts are provided under prompts/ for structural segmentation,
long-form auditory analysis, and question-answer generation. Bracketed placeholders mark the
record-specific inputs supplied to each prompt.
Example QA for Mozart’s Piano Sonata in F major, K. 332, I
Melody
Q: In the development's first lyrical developmental statement, what ordered three-note model opens the principal line?
A: The principal line opens with G4–C5–E5.
Harmony, color, and tension
Q: In the primary theme's crescendo continuation, when A3+F4 over F2 follows C3+Bb3+E4, what cadence type is heard?
A: The passage forms an authentic V7–I arrival in F major.
Texture
Q: In the exposition's primary theme, crescendo continuation, how are the melodic gesture, inner part, and bass organized?
A: The rising melody sounds over a sustained inner tone and a supporting bass.
Dynamics and phrase shaping
Q: In the exposition's primary theme, how does the lyrical response's broad three-note gesture compare expressively with the compact statement immediately before it?
A: The lyrical response is more songful than the preceding compact statement.
Function
Q: In the exposition's C-major secondary theme, what formal role does the G4–E5–E5–E5 gesture over C3–G3–C4 serve?
A: The gesture functions as the opening statement of the secondary theme.
Rhythm and time
Q: In the exposition's closing group, when the F4+G4 repetitions answer the bass melody D4–B3–G3, how are those foreground attacks placed against the bass?
A: The foreground attacks are offbeat.
Particular performance decisions
Q: At 00:04.46–00:05.37 in the opening tonic statement, what sounding-duration treatment distinguishes the first E5 from the following E5?
A: The first E5 is clipped relative to the following E5.
Example QA for Rachmaninoff’s Prelude in D major, Op. 23, No. 4
Melody
Q: During the expanded cadence of the second presentation (01:45.96–01:47.63), what five-note counterline enters to drive toward the high-point brilliance?
A: D5–F#5–G5–A5–G5
Harmony, color, and tension
Q: In the cadential expansion of the first thematic presentation, what specific suspended pitch creates friction within the E-dominant sonority over E1+E2 at 00:52.36?
A: D4
Texture
Q: How is the placement of the principal melody texturally altered between the first presentation (00:07.50) and the ornamented second presentation (01:02.90–01:09.24)?
A: The principal theme is transferred to an inner sustained voice beneath a newly added upper counterline.
Dynamics and phrase shaping
Q: Across the entire piece, between what timestamps is the work's principal dynamic climax located?
A: 02:42.36–02:45.84
Function
Q: What is the structural role of the quiet passage spanning 01:56.77–02:01.55 connecting the opening thematic section to the developmental sequence?
A: Transitional scalar link.
Rhythm and time
Q: During the sequential build-up leading to the climax (02:31.34–02:34.06), how does the temporal spacing between the paired chordal attacks change?
A: Each paired attack arrives closer together.
Particular performance decisions
Q: During the cadence of the first thematic presentation (00:44.15–00:47.26), what performance decisions regarding dynamics and spacing cause the closing gesture to recede?
A: Diminuendo plus widened final spacing.
Source copyrights and licenses remain with their respective datasets and score editions; no blanket license is asserted here.
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