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Running on Zero
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title: MuScriptor Studio
emoji: 🎼
colorFrom: gray
colorTo: indigo
sdk: gradio
sdk_version: 6.10.0
app_file: app.py
short_description: Multi-instrument audio transcription to editable MIDI
startup_duration_timeout: 1h
---
# MuScriptor Studio
A custom ZeroGPU interface for [MuScriptor](https://github.com/muscriptor/muscriptor), the multi-instrument audio-to-MIDI model from Kyutai and Mirelo.
The app runs the 307M-parameter medium checkpoint, streams transcription progress after each 5-second audio window, renders an interactive color-coded piano roll, and exports both the full arrangement and isolated instrument MIDI files.
Three one-click real-music examples are included: Mozart's *Magic Flute* overture with symphony orchestra, a live modern performance by the Harry Mitchell Quartet, and a double-tracked pop-rock guitar performance. Each example uses verified instrument guidance selected from live quality tests. Their Creative Commons provenance is documented in [`examples/README.md`](examples/README.md). Example results are cached lazily after first use so startup never consumes ZeroGPU quota.
The checkpoint is gated under CC BY-NC 4.0. This Space requires an `HF_TOKEN` secret whose owner has accepted access to [`MuScriptor/muscriptor-medium`](https://huggingface.co/MuScriptor/muscriptor-medium).
## API
The Gradio endpoint is `/transcribe`. It accepts an audio file, optional exact instrument group names, a sampling toggle, temperature, and a beam width from 1–4. It returns the combined MIDI, all isolated track files, the browser visualization payload, and a machine-readable manifest.
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