Brian Putz and I created the following two musical interface prototypes.
The first is a flat interface where placing six blocks on it triggers the playing of each track. For now, two potentiometers control the volume and pan of the tracks.
original sketch
prototype in action
The second is a Thom Yorke voodoo doll. By squeezing various parts of the doll, each track is switched on/off. Squeezing the neck (or vocal chords) of Mr. Yorke helps him sing by controlling the volume. Turning his microphone from left to right adjusts the pan.
original sketch
prototype in action