What is the song used on the new BT adverts?

I keep hearing the new BT adverts (not the Blue Monday ones - it's the one where someone is karaoking on the internet and on screen it shows "Woah-oh-oh" ) - and there is a song used right at the end of the advert - I think it's actually the same song that the person is doing karaoke to. I heard it on a scout camp this year in the Netherlands and I realised which song it was but when I got back I can't remember what song it was and it's really bugging me.