Music Tools
Explore harmony, build progressions and train your musical ear.
Chord Progression Studio
Compose with diatonic, secondary-dominant and borrowed-chord maps, then arrange, audition, transpose, save and export the progression.
Circle Of Fifths
Navigate major and minor keys, key signatures, diatonic harmony and functional relationships on an interactive harmonic wheel.
Music Theory Workbench
Explore scales, chords, intervals, keys and tempo in one visual workspace with instant local audio playback.