Prog rock wasn’t born in the 1970s, but that’s when the genre came of age and reached its commercial peak. Inspired by King Crimson‘s late Sixties work, a whole new generation of bands such as Yes and Genesis quickly grew from tiny art rock bands to enormous stadium rock acts. Some rock fans found the work pretentious, but huge cults formed around these bands that loved their every move. To the true believers, no song could be too long and no light show could be too elaborate. (Many rock fans turned off by Jethro Tull and Emerson, Lake and Palmer still loved Pink Floyd and Rush, though.) We asked our readers to vote for their favorite prog rock albums of the Seventies. Here are the results.