The proliferation of Chilean rock bands in the early 1970s ended with the military coup of 11 September 1973. The repressive military regime prohibited all manifestations of rock music, along with many other forms of culture (see Military government of Chile (1973–1990): cultural life). This brought about a decline of the music industry in Chile and a deterioration of the Chilean rock scene. Some Latin American fusion bands broke up, like Los Blop's, while others fled abroad, like Los Jaivas, who emigrated to Argentina. Others, like Congreso, were forced to radically change their music to a progressive rock style. By the late 1970s, an underground scene gradually began to emerge with punk rock, heavy metal, and later new wave music becoming increasingly popular.