Although 2 Chainz second single doesn't hit iTunes until midnight , 2 Chainz releases a clean version of 'Birthday Song' with a major feature from Kanye , produced by Sonny Digital and Kanye West . During a Def Jam conference call with Young Sav , Chainz says Birthday Song came about with a combination of Kanye West and 2 Chainz combining their worlds until they reached a perfect world . Based on a T.R.U. Story arrives August 14th !
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