Talib Kweli Greene is an American rapper. He is one half of the hip-hop duo Black Star, which he formed in 1997 with fellow Brooklyn rapper Mos Def. Their 1998 single, "Definition", entered the Billboard Hot 100 and preceded their eponymous debut album (1998), which entered the Billboard 200. The duo then began pursuing solo careers, although one further Black Star album — No Fear of Time (2022) — has been released.