Mos Def was born Dante Terrell Smith in 1973, in Brooklyn. He's used a number of other stage names in the past, including Black Dante and Flaco Bey.
His debut, 1998's Black Star, was a collaboration with Talib Kweli. Its follow-up, 1999's Black On Both Sides, was a commercial success: it reached number 25 on the Billboard chart and spawned a number of singles.
2004's The New Danger reached number five on the same chart, and has sold close to half a million copies. That year he presented the MOBO Awards.
Mos Def's talents are no restricted to the music world: an accomplished actor, he has appeared on both stage and screen. Among his movie credits are Monster's Ball, The Hitchhiker's Guide To The Galaxy, and 16 Blocks.