This is the way a Live Set should be opened.
Clash, a track by the up and coming, former Swedish House Mafia, Alesso (I've very high hopes for this guy), is a massive, a really MASSIVE track. It settled the mood for the rest of what was an extraordinary performance.
The video has some really bad quality, but I think you'll get the idea of what transpired Saturday night and what kind of show AVICII delivered.
For your listening pleasure.