Following his supposed ban from entering the United States, Yaslin Bey (aka Mos Def) recently appeared as a special guest at Dave Chappelle's sold-out Radio City show. Besides playing 'Umi Says' and 'History', Bey was also joined by his Black Star partner-in-crime Talib Kwell, with the pair performing 'Definition' and 'Redefinition'. Watch some fan-shot footage below.

Source: CoS