And it ignores earlier, similar instruments like Futureman's "drumtar", a keytar with the guts ripped out and replaced with MIDI keys (usually configured with drum samples). http://en.wikipedia.org/wiki/Future_Man
One of my professors had once told me that the people handling cutting edge technology in every era were inevitably into music, and that's why music tech has always sat at the cutting edge of tech. Still remember that, 2 years on!