DJ Premier was born before 1968 .
Christopher Edward Martin ( born March 21 , 1966 ) , known professionally as DJ Premier ( also known as Preem , Premo , or Primo ) , is an American record producer and DJ , and was half of the hip hop duo Gang Starr—alongside the emcee Guru—and forms half of the hip hop duo PRhyme , together with Royce da 5'9 '' .
DJ Premier