Beatboxing examined: USC team studies a cappella hip-hop rhythms
When first generation rapper Doug E. Fresh, former Roots beatmaker Rahzel or "Yo Gabba Gabba" rapper Biz Markie learned to mimic a hip-hop rhythm using only their voices, chances were they had little idea what they were actually doing with their mouths.
L.A. Times - Pop & Hiss — When first generation rapper Doug E. Fresh, former Roots beatmaker Rahzel or "Yo Gabba Gabba" rapper Biz Markie learned to mimic a hip-hop rhythm using only their voices,... more info