Christopher Edward Martin, known professionally as DJ Premier, is an American DJ and record producer. He is considered one of the greatest hip hop producers of all time. He was half of the hip hop duo Gang Starr—alongside the rapper Guru—and presently forms half of the hip hop duo PRhyme, together with Royce da 5'9".

Gang Starr was an American hip hop duo, consisting of Houston-born record producer DJ Premier and Boston, Massachusetts rapper Guru. For the entirety of their association, they were based in Brooklyn, New York. Gang Starr was at its height from 1989 to 2003, and are considered one of the best MC-and-producer duos in hip hop history. They are recognized for being one of the pioneers of jazz rap. Some of their top hits include "Mass Appeal", "Take It Personal", "Moment of Truth", "Full Clip" and "Above The Clouds".