A poll in Hungarian Youth magazine listing the nation's favorite rock musicians inspired several of the winners to form a new band together.

[11] In 1973, the band wrote the music for the politicized theater production An Imaginary Report on an American Pop Festival.

[1] This endeavor frustrated Frenreisz who left to form his own band Skorpió; he was replaced by Tamás Somló, another former member of Omega.

Tamás Barta left the band and defected to the United States, which then caused the Hungarian government to ban Bummm!

[1] The lineup of Presser, Somló, Karácsony, and Solti remained intact for forty years until the group disbanded.

[7] They toured the Soviet Union in 1980 and were offered an international contract by EMI the following year, with an invitation to record at Abbey Road Studios in England.

(1982) and Ellenfél nélkül (1984) were unsuccessful and the band gave up their international touring ambitions to focus on the Hungarian market.

[1] The band ceased regular activity in 1986 but re-emerged in 1992 for a major concert in Budapest celebrating the downfall of Communism.