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Lady Gaga takes the stage by storm, Jennifer Lopez rocks her body, Chris Martin bends backwards on his piano stool, Carrie Underwood belts tunes and Fergie gets down and dancing.
If that isn't enough for you, Nicki Minaj shows in a cute outfit, Nicole Scherzinger and Steven Tyler perform together, Justin Timberlake speaks on stage and Alicia Keys performs with Jay-Z.
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