The mat consists of 12 pressure sensitive stomp pads (thank you velostat) arranged in a circle with dynamic RGB leds. These are general purpose, meant primarily to control a synthesizer or effects with built-in concept of western musical pitch classes. DDR your way around the circle of fifths or the chromatic circle. Great way to harmonize with a keyboard or MIDI wind instrument. Built on Arduino with "driver" and synths implemented in Max/MSP.