Roots of Sadat X

Robert A. Hall Jr., known by his stage name Lord Finesse, is an American rapper and hip-hop producer from The Bronx, New York, best known as the leader of the D.I.T.C. crew. About.com ranked him number 29 on its list of the Top-50 Hip-Hop Producers.

Adam Andrzej Ostrowski, better known as O.S.T.R., is a Polish rapper, musician, audio engineer and record producer, famous for his freestyle rap skills, ambitious lyrics and unique beats. He graduated from the Academy of Music in Łódź, violin class. He is one of the few Polish rappers who have received professional musical education. He has collaborated with American rappers such as Evidence, El Da Sensei, Craig G, Keith Murray, Jeru The Damaja, Lil' Dap, Sadat X and Canadian producer Marco Polo. He has also collaborated with many Polish artists, including jazz musicians Michał Urbaniak, AbradAb Hades, SOFA, Fokus, DJ Deszczu Strugi, DonGURALesko, Vienio i Pelson, Fu, Pezet, Sistars and Slums Attack. He is a member of bands such as Tabasko, Skill Mega, Killing Skills, Beat Brothers and musical project POE. He is also a former member of Obóz TA and LWC. In 2013, he shared the position of art director of Męskie Granie festival with alternative rock vocalist Kasia Nosowska.

R.A. Thorburn, better known by his stage name R.A. the Rugged Man, is an American rapper and producer. He began his music career at age 12, building a reputation locally for his lyrical skills. Thorburn signed with major label Jive Records at age 18, but his debut album, Night of the Bloody Apes, was never released.

Paul Edward Huston, better known by his stage name Prince Paul, is an American record producer, disc jockey and recording artist from Amityville, New York. Paul began his career as a DJ for Stetsasonic. He has worked on albums by Boogie Down Productions, Gravediggaz, MC Lyte, Big Daddy Kane and 3rd Bass, among others. Major recognition for Prince Paul came when he produced De La Soul's debut album 3 Feet High and Rising (1989), in which he pioneered new approaches to hip hop production, mixing and sampling, notably by including comedy sketches.