U2's Nashville concert ending with a rather unique performance this weekend.  The 360 World Tour usually gets closed out with the song "Moment Of Surrender" except for this night.  Rolling Stone says Bono invited a blind guy up on stage after seeing he was holding a sign saying he wanted to play a song for his wife.  What do you think Bono said?

What do you want to play?  Get a guitar for this dude. Gents, we have a surprise guest."

In an amazing performance Bono begins to sing "All I Want Is You" with the audience member playing his guitar then the band joins in and its really awesome what Bono does at the end of the song.  Check it out in the video below.

If you could perform any song on any stage along with the artist, what song would it be?