The song is called One Day Like This. It was a top of the charts hit in the UK in 2009 by the Manchester England based band Elbow from their critically acclaimed, multi award winning album, The Seldom Seen Kid. The song was also used in the trailer for the soloist. Another Elbow song Grounds for Divorce was used in the trailer for Burn After Reading. I highly suggest giving this amazing band a good listen. While little known to American audiences, they are HUGE in the UK.
That song is by The Seldom Seen Kid and it's called On a Day like this. If you want the lyrics here's a website....