---
license: cc-by-nc-4.0
tags:
  - music-transcription
  - audio-to-midi
  - multi-instrument
  - music
  - mirror
---

# MuScriptor — multi-instrument music transcription (MAESTRO mirror)

Mirror of [MuScriptor](https://huggingface.co/MuScriptor) (Kyutai × Mirelo),
laid out for MAESTRO's download-on-demand loader:

| path | upstream | notes |
| --- | --- | --- |
| `small/` | [MuScriptor/muscriptor-small](https://huggingface.co/MuScriptor/muscriptor-small) | 103M params, CPU-capable |
| `medium/` | [MuScriptor/muscriptor-medium](https://huggingface.co/MuScriptor/muscriptor-medium) | 307M params, default |
| `large/` | [MuScriptor/muscriptor-large](https://huggingface.co/MuScriptor/muscriptor-large) | 1.4B params, most accurate |
| `shared/beat_this_final0.ckpt` | [CPJKU/beat_this](https://github.com/CPJKU/beat_this) `final0` | tempo / downbeat tracker (MIT) |
| `shared/MuseScore_General.sf2` | [MuScriptor/assets](https://huggingface.co/MuScriptor/assets) | soundfont for the A/B audition (MIT) |

Weights are byte-identical to upstream (sha256-verified at mirror time).
Inference code: [muscriptor/muscriptor](https://github.com/muscriptor/muscriptor) (MIT).

## License

Model weights: **CC BY-NC 4.0** (non-commercial), as published by Kyutai ×
Mirelo. This mirror adds no restrictions. beat_this and the soundfont are MIT.

## Citation

```bibtex
@misc{rouard2026muscriptoropenmodelmultiinstrument,
  title={MuScriptor: An Open Model for Multi-Instrument Music Transcription},
  author={Simon Rouard and Michael Krause and Axel Roebel and Carl-Johann Simon-Gabriel and Alexandre Défossez},
  year={2026}, eprint={2607.08168}, archivePrefix={arXiv}, primaryClass={cs.SD},
  url={https://arxiv.org/abs/2607.08168},
}
```