Musical repetition

I began to look into muscial repetition to slot into the dissertation but then backed off because I realised it was way way  too complex a subject to dip into lightly, BUT I came across this  http://www.youtube.com/watch?v=X8v-uDhcDyg Symphony for 100 Metronomes by Gyorgy Ligeti.  For me this is the perfect sound equivalent to much of my work. The metronomes all start at the same time – the chairs are all there then the eye begins to move round and round looking for a pattern, which does not exist – the metronomes tick and tick and tick and one strains to pick out a rhythm which never comes.  And then for one brief shining moment a rhythm appears, and then it is gone. I love it.