As for TI, Ludacris, Bob and implementation "Top Of The World" in Philadelphia at the Wachovia Center for Power 99 "Power House"! Concert was crazy ... Appearances by Jay-Z, T-Pain, TI, Ludacris, Bob, Keyshia Cole and Neyo.
http://www.youtube.com/watch?v=uteIIfnALN8&hl=en
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