What is this song? http://www.youtube.com/watch?v=zr-eY0zggkM&feature=player_detailpage#t=288s
The question has been closed for the following reason "The question is answered, right answer was accepted" by TheTechDude Nov 02 '12 at 07:22
Moonlight Sonata, by Beethoven.
Actually answered about a year ago in the comments when someone else asked similar.
answered Oct 22 '12 at 17:04