Chime

strum it. it rings in color.

sweep across strings — plucks ring visually

Every string is tuned to the same five-note scale, just walking up through octaves, so however chaotically you cross them the plucks always land in some consonant relationship to each other instead of clashing. It is built to reward a careless hand: there is no wrong way to strum it.

Concepts: harmony, color.

An interactive you play with one thumb, on Wundr.