What song is playing at the beginning of Obama's acceptance speech at the democratic national convention?

Question

Here's the speech: http://www.youtube.com/watch?v=yZCrIeRkMhA the song starts playing right in the beginning when Barack Obama walks out onto the stage. If anyone could take the time out to watch the video and tell me the song I would greatly appreciate it! Thank you!

Answer 1

U2 - "City of Blinding Lights"

http://www.youtube.com/watch?v=j6IQoOvvc...