Musical instrument made from a bunch of piezoelectric contact microphones stuck onto a SynthAxe (an inordinately expensive MIDI guitar), putting out audio trigger signals that are converted to MIDI data by drum-pad modules.

The SynthAxe Drumitar used by Future Man is almost definitely unique, but other hand-drumming instruments on the "bunch of piezo triggers on a board" theme have been made by a company called Zendrum, and probably by many non-famous DIY musician types like ME.