KSU is a Polish punk rock band founded in 1977 in Ustrzyki Dolne, a small town in the Bieszczady Mountains of southeastern Poland. Led without interruption by guitarist and vocalist Eugeniusz "Siczka" Olejarczyk, the band is considered one of the pioneers of punk rock in Poland and has released 11 studio albums over nearly five decades. Their sound evolved from raw punk into a broader rock style, while their lyrics - rooted in rebellion, social commentary and love for the Bieszczady region - kept a loyal following across generations.
KSU played a concert in Rzeszów on 6 March 2026, marking Siczka's 65th birthday.
KSU embarked on a special acoustic tour with Józef Skrzek running February to April 2026, with shows at Kraków's ICE Congress Centre and Gdańsk's Polska Filharmonia Bałtycka.
KSU launched the 'Idź Pod Prąd II' tour in October 2025, with stops in Lublin, Gdańsk, Wrocław, Szczecin, Kraków and Warsaw's Stodoła, joined by Farben Lehre and The Analogs.
KSU released their 11th studio album '44' on 24 February 2023 via Mystic Production, their first new studio material in nine years.
KSU's debut album 'Pod prąd' and 'Ustrzyki' were reissued on vinyl in October 2023.
Music festival featuring Big Cyc, Farben Lehre, KSU and other artists at the amphitheatre in Płock.
A legend of Polish punk rock, KSU will perform at Lizard King club. The band from Ustrzyki Dolne, one of the pioneers of Poland's punk movement, will play their iconic songs.