On REKS’ junior album, the hip-hop purist revealed that the game had left him with a few Grey Hairs, and his senior set saw him sprouting more of the same. Whether the emcee’s feeling a little less stressed or has simply discovered hair dye, though, he’s going back to R.E.K.S. (Rhythmatic Eternal King of Suspense) for album number five. This past week, the Boston-area native went to the studio to record one of the standout tracks off the first-quarter 2010 release; That’s What’s Up finds him teaming up with fellow Northeast underground stalwart Bossman over a Statik Selektah-produced instrumental that sounds like the East Coast beatsmith’s hopeful contribution to Detox. Bossman sums it up best: “F*ck a ‘So So Def’, bring the noise to ya ear!” Now That’s What’s Up!