Music from Episode 1

I have been watching a recording of the first episode and am trying to find out the music which is playing when Nathan and Jase are looking at the girl walking down the stairs. It is the second song after "A certain romance" by artic monkeys and before the prodigy "one love". It is very catchy and i cannot find out what it is. I checked on the BBC Three website but it is none of the songs listed.......Help