American hip-hop outfit formed in 1993 and featuring Chali 2na, Akil, Zaakir, Mark 7even, Nu-Mark and Cut Chemist. The band came together from two separate crews, the Rebels of Rhythm and Unity Committee.
Key albums include their self-titled debut plus "Quality Control" and "Power in Numbers". The 12" "Concrete Schoolyard" was a Top 40 hit in 1998.