Roots of Lord Finesse

Gang Starr were an American hip hop duo, consisting of Houston-born record producer DJ Premier and Boston-based rapper Guru.

Main Source was a Canadian-American East Coast hip-hop group based in New York City/Toronto, composed of Toronto-born DJs and producers, K-Cut and Sir Scratch, as well as the New York City natives, DJ J.O.D and record producer Large Professor. Later, another Queens MC, Mikey D, replaced Large Professor.

William Paul Mitchell, better known by the stage name of Large Professor, is an American rapper and record producer. Based in New York City, he is a founding member of the underground hip-hop group Main Source, and is credited with having discovered and mentored fellow New York City-based rapper Nas. About.com ranked Large Professor at No. 13 on its Top 25 Hip-Hop Producers list.

Looptroop Rockers is a hip hop group from Västerås, Sweden. The members are the rappers Promoe, Supreme, DJ/Producer Embee and CosM.I.C. On their fourth album, Good Things, the group changed its name from Looptroop to Looptroop Rockers, a name used unofficially for some years prior to the change.

Derek W. Murphy, better known as Sadat X, is an American rapper, best known as a member of alternative hip-hop group Brand Nubian. Originally known as Derek X, Sadat takes his name from former Egyptian president Anwar Sadat.