Bringing his positive message to the stage, Pitbull sang his hit 'Give Me Everything' with Ne-Yo

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One Direction, Ariana, Avicii & More! The MUST-SEE Pictures From Capital's Summertime Ball 2015

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See the full gallery: One Direction, Ariana, Avicii & More! The MUST-SEE Pictures From Capital's Summertime Ball 2015