Petr Kumandžas, also known as Komanč and Jolly Joker (born 27 June 1961) is a Czech bass guitarist and former drummer.
Early in his career, he was a member of Mikoláš Chadima's "MCH Band", playing on their 1983 album "Jsme zdrávi a daří se nám dobře (We Are Well And We Feel Fine)", and also played with Jižní pól. In 1985, he joined Babalet. After leaving the band in 1987, he formed his own band "Egypt", playing bass guitar and singing. "Egypt" released their eponymous debut album in 1991. The band transformed into "Jolly Joker and the Plastic Beatles of the Universe" in 1991, releasing the album "Heavy, Funky, Boxing N' Roll" in 1993. Their name was later shortened to "Jolly Joker &amp; P.B.U." In 2014–2016, he played with "Tewahedo MoM" with Michal Šeps. He joined Umělá hmota in 2022. He is also playing with his own project "Icebreaker" and with the band "Svatopluk", playing the songs of Svatopluk Karásek. He also played with "ArchAnděl MichAel".
In 1989, he joined Půlnoc for a few years, playing drums. The band was reformed in 2011 with Kumandžas on bass. They played their farewell tour in 2022.