Minichord Lab
Small web views that use the minichord as an interface for music theory. Each one listens to the chord buttons over MIDI, reading every voice's exact pitch, the key and the temperament, and draws what the chord is doing.
Pitch-class clock
Every chord as a shape on a clock face. Transposing turns it, major to minor flips it, and the clock follows 19- and 31-note temperaments.
Tonnetz
Each triad lights a triangle on the map of harmony, and the trail names every P, L and R flip, beside how far your voices moved against the smoothest way.
Roughness
How rough each chord sounds in every temperament the minichord knows: one number per chord, the sweet and sour keys, and the dissonance curve behind them.
Beats
Two voices drawn against each other like an oscilloscope: still for a pure ratio, rolling when tempered. How fast every interval beats, in every temperament.
Ear trainer
Hear a chord or a progression in your key, then play it back on the chord buttons. It checks the chord, and the bass note if you like, with hints when you miss.
Chord geometry
Every three-note chord as a point in Tymoczko's twisted prism. Going up transposes, going across changes shape, and the line between two chords is the smoothest voice leading.
Stage
Full-screen visuals for a projector at a gig: ribbons, blooms and constellations drawn live from the voices, with rough chords shimmering and sweet ones still.
Choir
Each voice of the chord sung by its own singer, with voice leading, glide and temperament controls and an MPE recorder.
You'll need a minichord with the unofficial test-allFeatures firmware for MPE, key and temperament, and Chrome, Edge or Opera. Every view also has test chords that work without one.