If you wanna scream YEAH! Can Usher do the hat-trick and return for a THIRD time?

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Who's On The Summertime Ball Line Up? Check Out The Most Popular Performers In STB History (2009 - 2014)

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See the full gallery: Who's On The Summertime Ball Line Up? Check Out The Most Popular Performers In STB History (2009 - 2014)