This is an alternative controller built of a wood panel, conductive paint, copper leaf, capSense, light resistors, leds, and a chipkit.
The painting is played by modulating the relationship of the circuit to the ground. As the performer draws near/far, the disturbance grows stronger/weaker. Touch grounds the circuit and functions as a switch. There are 4 distinct zones that can be used (independently or in combination) to control and produce gestures.
you can see me perform it in this Brown video: