Few hypes in rock history have been as quickly and brutally deflated as "the Bosstown Sound," a 1968 marketing campaign dreamed up by producer Alan Lorber. A music industry jack-of-all trades with a better understanding of how business is conducted than how rock & roll is made, Lorber hit on the idea of creating his own scene to market. But the bands he signed — Ultimate Spinach, Orpheus and Beacon Street Union — were wildly divergent and didn't know they were part of any "sound" until they saw the ads in Billboard, and critics quickly wrote them off as co-conspirators in the hype. Alas, lost in the shouting were several good Boston bands, including Bagatelle with Willie Alexander, the Beatles-inflected Puff and Eden's Children. The Boston Sound: 1968 Revisited is a swell documentary, bringing together the good, the bad and the ugly of the era's Boston scene — including Orpheus 'overlooked "Can't Find the Time"; Lorber's own Bacharach-esque Muzak take on psychedelia; and Chameleon Church, featuring Chevy Chase on keyboards.