Barrel

Click / tap the barrel roll on the right to add or remove a pin on that track. Each row is one comb tine (pitch); the dashed line is the comb — a pin plucks its tine when it crosses it.

Readout
Tempo
4.8 RPM
Revolution
0%
Active plucks
0
Pins placed
0

A real music box works the same way: pins fixed to a rotating brass cylinder lift and release the tines of a steel comb as it turns, one revolution = one melody loop.