With mellifluous harmonies, an imaginative blend of male and female voices, infectious energy, and a superior taste in repertoire, Peter, Paul & Mary brought folk music to broad popular attention in a way that no other artists ever had. With such early signature songs as “Lemon Tree,” “If I Had a Hammer,” “Puff the Magic Dragon,” “Where Have All the Flowers Gone,” and, of course, Bob Dylan’s “Blowin' in the Wind,” P. P. & M. gave popular voice to the burgeoning folk music scene of the 1960s. Massively acclaimed during the early days of the decade, the trio continued to have success with later hits including “I Dig Rock & Roll Music” and “Day Is Done,” while their albums, including the children’s collection Peter, Paul and Mommy, went on to become perennial classics. This four-disc (plus bonus DVD) collection provides a comprehensive picture of the pioneering ensemble that is designed to please both devoted fans and first-time listeners. All the best-loved performances are accounted for, as well as a multitude of live cuts and rarities. Here’s the place to turn for the real artistry and sheer pleasure of the folk music boom that A Mighty Wind didn’t catch.