Lady Gaga, Eminem, Perry to perform at Grammys

Lady Gaga performs during the fifth annual concert festival at Lollapalooza in Grant Park Friday, Aug. 6, 2010., in Chicago. (AP Photo/Nam Y. Huh)

January 13, 2011 10:10:50 AM PST
Lady Gaga, Eminem, Katy Perry are set to perform at the 53rd annual Grammy Awards.

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