A growing collection of interactive tools to help you explore harmony, keys, chords, and how music works.
Explore the circle of fifths, understand key signatures, diatonic chords, modes, and modulation paths interactively.
Hum, whistle, or sing a melody and export it as a MIDI file ready to import into any DAW.
Look up any chord by name or by the notes you're playing and see where it fits in a key.
Train your ear to recognise intervals by sound, with adjustable difficulty and session stats.