Tonewheels is an experiment in converting graphical imagery to sound, inspired by some of the pioneering 20th Century electronic music inventions.

In this three day workshop from 24-27 October 2009 in Bulgaria, participants built a simple light-to-sound converter and DC motor controller, and then began to experiment with drawing sounds onto transparent “tonewheels”. The workshop ended in a group performance and an invitation to the audience to try out the instruments for themselves.