Ooooh...
Okay! Either Life In A Beautiful Light (from the Life In A Beautiful Light album, Amy Macdonald) or Pop Song 2006 (Razorlight, Razorlight).
Life In A Beautiful Light: http://www.youtube.com/watch?v=SmBIpoZ5AkI
Pop Song 2006: http://www.youtube.com/watch?v=MdDH5lOV3DU