A Zenrum is a hand-crafted MIDI controller that is used as a percussion instrument. It consists of a triangular hardwood body with 24 touch-sensitive plastic pads which act as MIDI triggers. The pads are played by tapping or slapping with the fingers or hands. As a controller, the Zendrum does not make any sound by itself. It uses an electronic interface called MIDI to control a synthesizer or electronic drum device that generates the musical sounds.