Not the one with the ubiquitous hit, but these Long Islanders’ tantalizingly enigmatic manifesto remains their most compelling. You don’t really need to know about producer Sandy Pearlman’s bizarre sci-fi mythos involving underwater cults, mysteriously appearing radios, and the space god Imaginos to appreciate the evocative imagery and post-blues classic rock riffs used to bring said mysteries to life. “Astronomy” remains one of the most achingly gorgeous songs to come out of the 1970s.