A physics sequencer: balls fall from a hose, bounce down a set of tuned planks, and every contact plays a note. Arrange the planks and the falling balls write the score. It needs no audio or MIDI input; press Play and it plays itself.
The idea
Each plank is tuned to a pitch, and each strike sounds an electric-piano tone from Maru's four-operator FM Keys synth. A ball's position when it hits sets where the note sits in the stereo field, and how hard it hits shapes the note. Move a plank and the path changes; change its slope and the balls roll off toward a different neighbour. The result is a melody that follows the physics rather than a grid.
