Big DS (1971-2003) was a hardcore hip hop MC who was with JMJ Records (founded by Jam Master J'Son).
JMJ Records is an American record label which was founded in 1989 by Jason Mizell, better known as Jam Master Jay from Run-D.M.C.. The label was relaunched in 2017 by Jam Master J'Son, the oldest son of the legendary Jam Master Jay. 
