Grandmaster Jay is an Old School Hip Hop pioneer. He first appeared in the late 70s as a rapper and was seen with the like of the stars of that day (Sugar Hill, Sequence, Treacherous Three, West Street Mob,ect) He changed into a deejay in the early 80s and was very popular until RUN DMC appeared and Jam Master Jay stole his name. Many confuse the two to this day. He is a part of The CORE DJs, Funkmaster Flexx's Pitbull All-Stars, Grandmaster Jay is still around today spinning behind major rappers and producing major cuts. He was recently spotted on tour with Talib Kweli and The Legends of Hip Hop Tour.