Kaleidophone is an interactive sound installation that invites visitors to select and stack any number of coded discs upon the spindle of a base unit. These discs can then be moved, spun or stopped independently. Each disc features unique patterned cutouts, which unmask arrays of sensors on the base unit, thereby controlling various aspects of the sound and rhythmic patterns produced by the piece. Stacking the discs on the spindle will combine the cutouts of multiple discs, but with each disc featuring its own unique pattern and being freely moveable with respect to the other discs, the results will be largely unknowable. We can tell the Kaleidophone when to change, but the complexity of its internal logic means that we can only wonder at, and not predict, the results.