In just over a year 2 Chainz has gone from “that guy who used to be in Playaz Circle” to one of the game’s hottest (and most guest featurable) rappers. So with the release of his Def Jam solo debut, Senor Dos Chainz has decided to follow his successful lead single No Lie by bringing on G.O.O.D. Music head honcho Kanye West for banger Birthday Song. Along with co-producer Sonny Digital, Mr. West arrives in the building with an instrumental that we’ll be hearing blaring from car windows for months to come. Yeezy follows his own instrumental lead with a middle guest verse, leaving Chainz to request a “big booty girl” as his one and only Born day wish. Will Birthday Song prove to be exactly what Chainz needed to send sales of his Based on a T.R.U. Story album soaring? That’s for you to decide in the comments and ratings - have at it people.