jenyasn/muscriptor-medium-fp16

MuScriptor medium (fp16 mirror)

An fp16 copy of MuScriptor/muscriptor-medium (307M parameters), the multi-instrument music transcription model by Mirelo and Kyutai. It's mirrored here so the byEar Chrome extension by jenyadoesapps can download it without a Hugging Face login. It runs fully on your GPU with WebGPU.

Changes from the original: transformer weights converted from fp32 to fp16, which halves the download. The audio-conditioning tensors (condition_provider.*) are kept in fp32. Tensor names are unchanged, so the official muscriptor package loads this file as is.

All credit goes to the original authors. Paper: MuScriptor: An Open Model for Multi-Instrument Music Transcription, Rouard, Krause, Roebel, Simon-Gabriel, Défossez (2026), arXiv:2607.08168.

License and conditions of use

Released under CC BY-NC 4.0: non-commercial use only, with attribution. The original authors add the following conditions, which also apply to this copy:

MuScriptor is the result of a research collaboration between Mirelo and Kyutai whose purpose is to transcribe audio to MIDI/music sheet. It is provided primarily for research purposes under the CC BY-NC 4.0 licence supplemented by the below specific conditions of use.

Specific conditions of use: MuScriptor and any generated content by MuScriptor are provided as is without any warranty of any kind, including but not limited to any warranty of non-infringement. Use of MuScriptor and its output must comply with all applicable laws and must not result in, involve, or facilitate any illegal or unauthorized activity. Prohibited uses include, without limitation, inputting music files and transcribing them to MIDI/music sheet without having all the necessary rights, including intellectual property rights, under applicable laws. Accordingly, users of MuScriptor undertake and warrant to have all the necessary rights, including intellectual property rights, in connection with their use of MuScriptor and its output. We disclaim all liability for any non-compliant use and users of MuScriptor shall indemnify, defend, and hold harmless Mirelo and Kyutai from and against any and all claims, damages, losses, liabilities, and expenses (including reasonable attorneys' fees) incurred by Mirelo and/or Kyutai arising out of or resulting from their failure to comply with the terms of the CC BY-NC 4.0 licence and/or these specific conditions of use.

Citation

@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},
}