Glen Hansard (10 photos)
Check out photos from Glen Hansard's live webcast!
Pitbull (9 photos)
Mr. Worldwide performs Live on Letterman.
The Neighbourhood (11 photos)
The Neighbourhood takes the stage for Live on Letterman.
Lady Antebellum (13 photos)
Lady Antebellum performs Live on Letterman from NYC!
Lorde (10 photos)
The New Zealand pop prodigy performs Live on Letterman.
J. Cole (9 photos)
J. Cole performs in an exclusive Live on Letterman webcast.
The Wanted (15 photos)
The British boy band takes Live on Letterman by storm!
The Avett Brothers (18 photos)
The Avett Brothers play a Live on Letterman webcast from NYC.
Two Door Cinema Club (15 photos)
Two Door Cinema Club rock the Ed Sullivan Theater in NYC!
Kings of Leon (16 photos)
Kings of Leon played a Live on Letterman webcast for a packed crowd in NYC!