Writer, scenarist, director, lyricist for Tamás Cseh, with whom he started to work in 1970. They composed some 1,200 songs, mostly in the early 1970s. However, they did not publicize these works in the early years. The songs, rather, were performed only privately. According to several people, they reveal more about life during the Kádár era than history books.

Born Géza Vetró, he later acquired the name Rozner from his foster father, which he replaced with his grandfather’s family name, Bereményi, when he became a legal adult. Studied Italian and Hungarian linguistics at ELTE and later worked as a dramaturg and as artistic director and a theatre director.

He published thirteen books, directed seven films and twenty-one plays, and wrote twenty film scripts and forty-six play-scripts. Member of the European Film Academy and the Hungarian Academy of Arts.