Build Shapes
Hear a chord and build it on your instrument. The root is given, so the work is hearing the quality — major or minor, and later the tetrad types — and placing the rest: basic shapes first, then the useful ones, then the inversions.
Triads in a major key on piano
A chord sounds and its root lights up on the piano; find the shape, then see it. Space reveals, Space deals the next. The browser only plays — the app listens.
Diatonic Triad Harmony
View the degrees of the major scale as roots of triads, so you can build them from any position. This connects harmony to melody and lets you find progressions in any key.
Key
Shapes
Reveal
or afterseconds
Next chord
or afterseconds
Range
Sound
Samples load on first play (~1 MB).
What you’re practising
Diatonic Triad Harmony
View the degrees of the major scale as roots of triads, so you can build them from any position. This connects harmony to melody and lets you find progressions in any key.
Build Shapes. Hear a chord and build it on your instrument, root given How it works →
On the piano: four octaves, C2 to C6.