Watch Live On Letterman Concert Performances From Adele, Katy Perry, Taylor Swift, And Other GRAMMY Winners! (page 7)

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Adele performs Live on Letterman (CBS Photo by JP Filo)

Adele performs Live on Letterman (CBS Photo by JP Filo)

Katy Perry: Two Nominations: Record of the Year and Best Pop Performance (both for “Firework,” below).

For more videos of Katy Perry Live On Letterman, click here

http://youtu.be/jusEL6drchE

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