notation-converter

A $0, fully in-browser music-notation converter — convert between MIDI, MusicXML, and Guitar Pro. Shipped as a headless library (notation-converter) + React bindings (notation-converter-react), with a demo on GitHub Pages.

• Design spec: docs/superpowers/specs/2026-06-23-notation-converter-design.md
• Future work: TODO.md

Known limitations

• Guitar-Pro-exported MusicXML writes each track as two identical staves (notation + tab). The converted .gp opens and plays, but shows those staves duplicated. MusicXML from other sources (Finale, Sibelius, MuseScore, music21) converts with correct structure; drum files are single-staff and unaffected. Details: docs/superpowers/debug/2026-06-24-musicxml-to-gp-crash-rootcause.md.

License

MPL-2.0.