I'm surprised Answerbank didn't give you a list of other posts to check before submitting your question where this answer has been asked many times before.
The music is called Feeling The Love, it's by a group called Reactor, you can download a 42 second clip of the song at their website, which is www.reactorsite.com, the single comes out to buy on 22nd March and you can find it on most peer-to-peer download software.