As inspiration for out piece we looked at a matrix sound system:

It is a simple grid of squares, there are no instructions. Whilst this might be confusing at first it makes you intuitively click the squares.

Each horizontal row is made out of a sound, the grid gets played in vertical order ranging from high notes to low ones. The sound loops around so that it creates a beat to the clicked boxes. By activating or deactivating squares you can change the rythm and creat cool sound patterns. The clicked boxes light up when they are played so that you can se where it is playing.

Try it out yourself:

http://www.sembeo.com/media/Matrix.swf