Until the beginning of the 1970s, Serbian rock bands released only 7-inch singles and extended plays. Korni Grupa was the first Serbian rock act to release a full-length album, in 1971, and one of the first bands to move towards progressive rock. Progressive rock dominated the Serbian rock scene during the 1970s, with a part of bands incorporating elements of traditional music into their sound. At this period, bands like YU Grupa, Pop Mašina and Smak achieved large mainstream popularity and massive album sales. The end of the 1970s featured the appearance of the prominent hard rock band Riblja Čorba, and the emergence of the closely associated punk rock and new wave scenes. Pekinška Patka was the first Serbian punk rock band to release an album, in 1980. The new wave bands Šarlo Akrobata, Električni Orgazam and Idoli, which appeared on the influential compilation album "Paket aranžman" in 1980, were followed by many new wave acts. Around 1982, new wave scene declined and many acts moved towards more commercial sound. During the 1980s, pop rock acts, such as Đorđe Balašević and Bajaga i Instruktori, dominated the mainstream scene, but various other rock genres also emerged, and the alternative rock scene, with the acts such as Ekatarina Velika, Disciplina Kičme, and Rambo Amadeus, started to develop and gain mainstream popularity.