Roots of Jeru the Damaja

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

Digable Planets is an American hip hop trio formed in 1987. The trio is composed of rappers Ishmael "Butterfly" Butler, Mariana "Ladybug Mecca" Vieira, and Craig "Doodlebug" Irving. The group is notable for their contributions to the subgenres of jazz rap and alternative hip hop.

Keith Edward Elam, better known by his stage name Guru, was an American rapper, record producer and actor. He was a member of the hip-hop duo Gang Starr, along with DJ Premier. He was born in Boston.

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.

Ryszard "Peja" Andrzejewski is a Polish rap musician, songwriter and producer. He is best known as the frontman of the Polish rap group Slums Attack. Peja was the recipient of the Fryderyk prize in 2002. In 2001 he played a role in the documentary movie Blokersi. He has been featured in The New York Times and The Source. The Slums Attack broke up in 2016.

Richard Anthony Simpson, also known as Chubb Rock, is a Jamaican-American rapper who released several successful hip hop albums in the late 1980s and early 1990s. A National Merit Scholar, Chubb Rock dropped out of Brown University to pursue his musical career.