Mos Def October 19, 2012

Mos Def is a MC, known by the stage names Mos Def and Yasiin Bey. He started his hip hop career in a group called Urban Thermo Dynamics, after which he appeared on albums by Da Bush Babees and De La Soul. With Talib Kweli, he formed the duo Black Star, which released the album Black Star in 1998.