Płomień 81, a Polish hip-hop group, was formed in Warsaw in 1998 by rappers Pawel "Pezet" Kapliński and Marcin "Onar" Donesz. The duo met at Primary School No. 81 in Ursynów, which inspired their name. Their first song "Ursynów" featuring Lady K appeared on the mixtape Enigma prezentuje: 0-22-Underground vol. 2. In 1999, their debut album Na zawsze będzie płonął, was produced by O$ka and released under Asfalt Records. The group later switched to RRX due to promotional dissatisfaction. Their second album, Nasze dni, was released in 2000, followed by their third album, Historie z sąsiedztwa, in 2005. The album was well-received, winning the Best Album of 2005 on hip-hop.pl and rapgra.com. Promotional music videos included "Powiedz na osiedlu" and "WWA".