13 different circles that move based on the position of different parts of your face. Flip the switches to toggle each circle. For a theremin, one must stand in front of the instrument and move their hands in the proximity of two metal antennas; similar idea here, but with your camera & your FACE, with each circle contributing its own note.
The default sound is a 450hz sine wave. Remix the project to add your OWN sounds :)