Ivan Bierhanzl

Ivan Bierhanzl (born 1958) is a Czech musician and record producer. Bierhanzl was born in 1958 in Prague. Early in his career, he played with Jaroslav Unger's Doktor Prostěradlo Band.Bierhanzl started working with The Plastic People of the Universe in the late 1970s, as a guest musician (Pašijové hry velikonoční, recorded 1978) and sound engineer (Co znamená vésti koně, recorded 1981). He also played with DG 307 in the late 1970s and again since the 1990s. In 2001, after Milan Hlavsa's death, he joined The Plastic People of the Universe along with Eva Turnová, the second bass player, initially as a guest musician, later as a full member. He is featured on their reunion album Líně s tebou spím / Lazy Love (2001). In 2005, he played on their collaborative album with Ed Sanders called The Garden Is Open.

He has been a member of the contemporary classical music ensemble Agon Orchestra (originally Agon Ensemble) since the 1980s and also plays with the experimental band DekadentFabrik and the traditional group Malá česká muzika Jiřího Pospíšila. He is also involved in the dramaturgy of several music festivals, including Opera Nova. In 2021, he was the curator of the Electronic Music Minimarathon at the Ostrava Days festival.He is a signatory of Charter 77.