Łukasz Rostkowski, born 16 October 1981 in Zielona Góra, is a Polish rapper,
singer, composer, and producer who co-formed the collective Kanał Audytywny in
2003. After the group disbanded in 2005, he released his solo debut album
Haelucenogenoklektyzm in 2006. Subsequent releases included Planet L.U.C (2008),
PyyKyCyKyTyPff (2010), and Nic Sie Nie Stalo (2013). He also composed the score
for the film Chłopi in 2023.