Peter, Paul & Mary were viewed as a legendary folk act in 1967--but everything pop ruled in '67 (this was, after all, the year of Sgt. Pepper's and the Summer Of Love), so the trio decided to do a "pop" album. And it mostly works. "Leaving on a Jet Plane" was a huge hit single--their only No. 1--and it probably gave its composer John Denver his first Colorado Rocky Mountain high, at least from a financial standpoint. Peter, Paul & Mary, of course, draw on their initial connection with Bob Dylan, this being '67 and all, even covering "Bob Dylan's Dream" here, and utilizing sometimes "electric" Dylan cronies like Paul Butterfield and Harvey Brooks. Originals like "Weep for Jamie" and "No Other Name" shine, but it's "I Dig Rock 'n' Roll Music" that takes PP&M into the pantheon of popdom, as they name check and imitate some of the biggest popsters of the day--the Mamas & the Papas, Donovan, and the Beatles--in a song that is the very definition of cultural ambivalence. --Bill Holdship