Though concert promoter Live Nation recently announced that they came to terms with Sean “Jay-Z” Carter on a ten year multi-venture deal, estimated at around $150 million, the great Hova has not yet officially waved Bye Bye to his friends and family at Def Jam. Following the release of current (but soon to be former) labelmate, Mariah Carey‘s new album, E=MC², Carter has jumped on a Jermaine Dupri (who else?) produced remix of Carey’s new single, Bye Bye. Most famously heard together on the DJ Clue-produced Heartbreaker, off Mariah’s Rainbow, Carter and Carey once again create a most magical collaboration. E=MC² is currently available in stores and at online retailers.