I thought this might be out here by now, but here is the first of the officially commissioned tunes for the 2012 Olympic games:
Muse - Survival
It's a strange thing, it must be said. I can't decide whether they are actually taking the piss with this. It's like a Queen/ELO/Chas and Dave/Metallica mash up.
It's just the first of many to be released each week, with other contributions coming from Elton John, Dizzee Rascal, The Chemical Brothers and Delphic. I think I'm most disappointed by The Chemical Brothers choosing to contribute, mainly because I'm expecting some sort of tedious anthem that athletes are going to enter the arena to. I hope they prove me wrong.