Turntable + Analog Drum Machine + Step Sequencer motif = Drum Buddy

Speaking of the step sequencer design motif, here's a video of the Drum Buddy, a hand-made, fantasmic analog drum / filter instrument thing, only 10 of which exist, and all of which are sold out (at $5000 a piece!). Note the rotating spool with marks, which are read by optical sensors hooked up to analog oscillators and filters. But unlike piano rolls or music boxes, this guy can be spun in a manner any DJ turntablist would appreciate.