Justin Bieber, Katy Perry, Ke$ha to Perform at American Music Awards

Artists join Christina Aguilera, Pink, Bon Jovi and Usher at November 21st awards show

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Justin Bieber, Katy Perry and Ke$ha have all been announced as performers for this year's American Music Awards, airing live from Los Angeles' Nokia Theatre on November 21st on ABC. The three performers, all of whom will be making their AMAs debuts, are up for multiple awards at this year's ceremony, including Artist of the Year: Bieber is nominated in four categories, while Perry and Ke$ha are up for three trophies. They join previously announced performers Christina Aguilera, Usher, Bon Jovi and Pink.

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"As a small-town kid from Canada, I never imagined that I would be nominated for AMAs, let alone be performing on the show," an "extremely humbled and honored" Bieber said, the AP reports. Fan voting for the American Music Awards is going on now at the show's official website. Lady Gaga and Eminem lead the field with five nominations apiece.