CultureLab: Sci Foo: Evolution of music and a dancing cockatoo

CultureLab: Sci Foo: Evolution of music and a dancing cockatoo: He plays us a medley of randomly-generated sequences - the starting point for the experiment - followed by another after 1000 or so (if I remember right) rounds of selection. The first clip is an ugly, clashing affront to our ears but the second, while it has no tune, is rhythmic and strangely mesmerising.