Watch GRAMMY Artist Performances From Live On LettermanKaty Perry, Adele, Coldplay, Wilco and other 2012 Grammy nominees perform Live on Letterman.
Gorillaz ‘Live On Letterman’ Webcast October 7
Gorillaz ‘Live On Letterman’ Webcast October 7
Katy Perry Hosts Free Live Concert Tonight
Katy Perry To Perform "Live On Letterman" Online Concert

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