Omnizart

What Omnizart is

Omnizart is a free Python library for automatic transcription of polyphonic music. It can transcribe pitched instruments, vocal melody, chords, drum events, and beats, with separate applications for music, drums, vocals, vocal contours, chords, and beats. Pretrained checkpoints are available for transcription, while the project also documents dataset downloads, feature preprocessing, model training, transcription, and sonification. Outputs include MIDI, CSV, and text; listed capabilities include chord detection, MIDI export, and stem separation. Omnizart supports Linux, Windows, macOS, and self-hosted setups, with pip, Docker, and Conda installation options and a command-line interface. Documentation links to a Colab notebook and a Replicate web demo. The package requires Python 3.8 or later and below 3.15. It is incompatible with ARM-based macOS because of underlying dependencies. Drum checkpoints can be used for transcription, although the repository reports a problem preventing loss convergence when training the drum model from scratch. The MIT-licensed project provides GitHub Issues for installation, compatibility, and usage questions.