- Prog Fretboards
- Paint and play on fretboards drawn to match a chord progression
- Hear your external apps/gear MIDI input synthesized in the browser
- Hear your chord progression synthesized either in the browser or sent out as MIDI output to external apps/gear
- Save and load chord progressions to and from a song list
- Piano Roll Piano Roll experiment
- Rulers Vertical color swatches to paint and play chords and progressions with
- Connecting Game Arpeggiate through chord changes by switching to nearest notes
- Hexagon Hexagon based input UI
- Multiple Fretboards paint and play on fretboards
- Spatial Note Fretboard arpeggios inverted to play nearby notes on the guitar fretboard
- Paint paint onto sheet music
- Vex4 VexFlow notataion from progressions sandbox
- js-music-theory on Github