Real drum samples from LinnDrum CDN, tighter rhythm and fewer notes

Sample-based drum kit and tighter rhythm snapping

Fix drum transcription and playback sounds

Add 15s timeout fallback for sample loading

Fix MetalSynth API (HH/ride/crash) and use mix audio for beat tracking

Fix piano roll quality, drum sounds, add original audio playback, fix speed

Add drum transcription with madmom onset detection + spectral classification

Fix bass in piano roll, upgrade guitar samples, improve bass optimizer

Improve transcription quality + upgrade to Magenta SGM+ samples

Sample-based guitar/bass sounds, filter bass from piano roll, two guitar tabs

Full Song quality pass: light optimizer, better guitar sound, tab accuracy

Add instrument-specific audio: guitar synth for guitar tab, bass synth for bass tab

Fix audio not playing in Safari: fall back to MP3 samples

Add sheet music tab with VexFlow notation and PNG download

Initial commit - Mr Octopus piano tutorial app