Drumbada.

Drumbada takes its cinematic pulse from the bombo legüero, a rare two-headed bass drum from South American folk music. Five groups of three virtual drummers each follow their own arpeggiator, and setting them to different meters and speeds builds interlocking polyrhythms. The Crew algorithm adds the loose behaviour of fifteen players hitting together, and dragging the mouse across the scene moves several parameters at once, for live playing or sketching a score.