Clavier

sweep the keys. fast is loud.

a desk synth whose keys speak only when they bottom out, as loud as they were moving

A piano key is a speedometer. The hammer only learns how fast the key reached the bottom, so pressing harder on a key that is already down does nothing, and a quick light flick is loud. Soft playing is a slow finger, not a weak one.

Concepts: velocity-sensitivity, piano-action, dynamics, scale, sound, motion.

An interactive you play with one thumb, on Wundr.