Matisyahu - One Day + Beatbox Freestyle (ACOUSTIC LIVE!).
DJ Jazzy Jeff & Fresh Prince Feat. Rock Ready C - Video Music Box Show (LIVE). Dope throughout, but beatboxing comes in around the 3:30 mark. 1987!
A UK cat here. . .
Killa Kela - I'm A Slave 4 U Beatbox (MTV 2002/08/15).
