Hungarian rock has been a part of the popular music of Hungary since the early 1960s. The first major bands were Illés, Metró and Omega. At the time, rock was not approved of by the Hungarian Communist authorities. In the 1970s, the Communists cracked down on rock, and Illés was banned from recording. Some members of the other bands formed a supergroup called Locomotiv GT, while the band Omega became very popular in Germany.