The Roots and OkayPlayer held their annual Holiday party last week at BB Kings, and they were joined by the likes of Mos Def, John Legend, Blitz the Ambassador and more. The most exciting part of the night, however, very well may be when the cast of the hit Broadway play FELA! opened the show with a rousing impromptu "performance". As many of you may know, Questlove of The Roots is a HUGE fan and supporter of the play. Check out the footage after the jump. The star of the play was also the MC for the entire night. If you haven't had a chance to check out FELA! yet, we strongly suggest you do. If you want more info, check our review HERE Heads up: J Smooth