What duo  was an American rapper and record producer apart of , who had a guest appearance in  the second album by American hip hop duo 1982 ?
Havoc (musician) Kejuan Muchita (born May 21, 1974), better known by his stage name Havoc, is an American rapper and record producer. He was one half of the hip-hop duo Mobb Deep.
2nd II None (album) 2nd II None is the self-titled debut album from Compton hip hop duo 2nd II None. The album was released on October 8, 1991 under Profile Records and it would be entirely produced by DJ Quik.