A2M (Audio To MIDI) is a simple desktop tool for transcribing local audio files into MIDI files with one click.

It is designed primarily for piano recording transcription, and works best on solo piano recordings.

Using A2M is straightforward:
Select an audio file, click Convert, and the application generates a MIDI file automatically in your Downloads/A2M folder.

All processing is done locally on your device, no uploads, no accounts, and no telemetry.

The app runs on CPU by default, with optional NVIDIA GPU acceleration for faster conversions.

Project links:
Website: justagwas.com/projects/a2m
GitHub: github.com/Justagwas/a2m
Documentation: https://github.com/Justagwas/a2m/wiki

A2M is fully open source and operates only on the files you choose.

VirusTotal scan result:
https://www.virustotal.com/gui/file/cc2a961baaaac2f8932c2e9ed04f0c27a55309cc03ed0825e44c8af18e263ce6

Features

  • Convert audio recordings into MIDI files instantly
  • Local-only processing (no internet uploads)
  • Fast workflow: choose file > convert > get MIDI
  • Output automatically saved to Downloads/A2M
  • Optional GPU (CUDA/DirectML) acceleration
  • Best transcription quality on solo piano recordings
  • Open source

Project Samples

Project Activity

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License

GNU General Public License version 3.0 (GPLv3)

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Additional Project Details

Operating Systems

Windows

Languages

English

Intended Audience

End Users/Desktop

User Interface

Project is a user interface (UI) system

Programming Language

Python

Related Categories

Python Audio Conversion Software, Python MIDI Software

Registered

2026-01-30