FRAN SCOTT: I love this piece. In fact I think it was the first bitof classical music that I ever heard. GREG FOOT: Ah yes Beethoven's Fifth Symphony. It's got the best startto any piece of music ever ...

One reason we really like [Rulof]’s hacks is that he combines the most unlikely things to create something unexpected. This time he makes a fast-moving loop of cotton string undulate in time to music.