With rumors of a reunion LP continually popping up online, fans have been fever pitch for Yasiin, formerly known as Mos Def, and Talib Kweli to join forces on a full project for the first time in over a decade. Despite the announcement that Yasiin and Talib cancelled a string of dates on Black Star's U.S. tour, the potential comeback came a little bit closer to fruition as both emcees graces the stage of The Colbert Report in order to showcase a brand new cut called “Fix Up” and to answer some challenging questions by Colbert on Yassin's recent name change, and the fine line between commercial and underground rap. Watch it above.