Mos Def has been down with Kanye since they both hopped on Talib Kweli's "Get By" remix in '03, byt he officially signed with G.O.O.D. in Sept of 2010. Kanye’s label had traditionally signed up-and-coming acts, but with the signing of Mos Def they began snatching the best of the best.
Mos Def Signs To G.O.O.D. Music