Artists like Firma

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.

Mateusz Zawistowski, known professionally as Żabson, is a Polish rapper and songwriter.

Kaliber 44 is one of the biggest Polish hip hop groups, formed in 1993 in Katowice. The group is dubbed the most influential Polish hip hop band, while their so-called hardcore psycho rap style is the most prominent. It was formed in the early nineties in Katowice, and its current members are Marcin "Abradab" Marten and Michał "Eprom" Baj. Over the years, the band was also co-founded by Michał "Joka" Marten, Piotr "Magik" Łuszcz, Sebastian "DJ Feel-X" Filiks, Rafał "Jajonasz" Łukaszczyk and Rafał "Gano" Wywioł.

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.

Slums Attack is a Polish street rap, rap and hip-hop group, founded in 1993 in Poznań by Peja and Marcin "Iceman" Maćkowiak. Since 1998, the group consists of Peja and Dariusz "DJ Decks" Działek. The group became popular in Poland in the 2000s.