A friend of mine was on Jimmy Kimmel

[Brehvolution]

This could have been on last night, I'm not quite sure.
She sang a tribute to the flight crew of flight 1549. The one that landed in the Hudson river.

http://abc.go.com/latenight/jimmykimmel/index?pn=index

After the player loads up, hover near the bottom of the player to select the different clips. hers should be the second from the left.