Mos Def, John Legend Join Roots for Annual Jam Session
It's hard to pick the biggest surprise of Saturday night's Sixth Annual Roots Jam Session at Los Angeles' Key Club. Some might say it was when an unannounced Mos Def performed his 'Black On Both Sides' standout 'Umi Says' and Grammy nominated track 'Casa Bey,' from his latest album 'Casa Bey...