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Katy Perry
Pop singer Katy Perry pauses during a taped rehearsal for the Grammy nominations television special in Los Angles, California November 30, 2010.

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Jay-Z
American rapper Jay-Z performs during the Heineken Open'er Festival in Gdynia, northern Poland, July 5, 2008.

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Drake
Canadian recording artist Drake poses at the party for the launch of the Blackberry Torch in Los Angeles August 11, 2010.

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Mumford & Sons
British band Mumford & Sons hold their nominee trophy as they arrive for the Mercury Prize awards in London September 7, 2010 REUTERS/Suzanne Plunkett

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Miranda Lambert
Miranda Lambert performs at the 45th annual Academy of Country Music Awards in Las Vegas, Nevada April 18, 2010.