Heaven knows, the Scotsman born Donovan Leitch was ripe for ridicule, even when he was hitting the charts with regularity. He was the ultimate flower child, and his airier pronouncements made cynics want to tighten up those love beads around his neck. Listening to Troubadour, however, it's striking how versatile, melodic, and agreeable most of his material sounds decades after "Mellow Yellow" has faded into a jaundiced yellow. Clearly under the sway of Bob Dylan early on in his career, Donovan nevertheless was capable of directing his reverence into something as enchanting as "Catch the Wind." Amping up as the '60s progressed, he assembled a series of psychedelic-pop classics, including "Season of the Witch," the "Hey Jude"-like sing-along "Atlantis," and the uncharacteristically driving "Hurdy Gurdy Man" (the latter features three-quarters of what was to become Led Zeppelin providing stellar support). This two-disc anthology may be more Donovan than some desire, but the booklet, seven previously unreleased tracks, and expansive perspective it provides makes it a more-than-worthy overview for those who take their paisley folk-rock with a beatific smile.

A 14-song, 63-minute collection (originally a double LP) comprising many of the highlights (but no "Light Flight") of the original group's history from 1968 through 1972. The notes are minimal, and there are no original release dates or any identification of the albums (The Pentangle, Sweet Child, Basket of Light, Cruel Sister, etc.) whence this material originated. The latter are the only flaws in what is otherwise a fine if not completely comprehensive cross-section of the group's work, showcasing their many and varied sides – Bert Jansch's, Danny Thompson's, and Terry Cox's jazz leanings in "Train Song," John Renbourn's more traditional approach in "Let No Man Steal Your Thyme," their forays into medieval music ("Lyke-Wake Dirge") and progressive folk ("House Carpenter," "Bruton Town"), etc., much of it projected by Jacqui McShee's clear, soaring vocals. The CD also highlights their early records' effective use of stereo as a format for their contrasting technique, especially among the guitars and the rhythm section.

Completists will be happy to own many of the rarities on this four-disc set, including Stevens's first demo session, an unreleased 1970 duet with Elton John, a cover of Fats Domino's "Blue Monday," and several choice live cuts from the late '70s. And it's nice to have an overview of the artist's entire career–from late '60s pop-star wannabe to '70s folk-rock superstar–in one place. But the difference between early Cat Stevens (despite composing hits for others) and post-Tea for the Tillerman Stevens is substantial. The two follow-up LPs were part of a trilogy of brilliance–both musically and lyrically–and any Stevens collection must start there. Nevertheless, surprises and some gems are to be found throughout all four discs–even his most recent recording (as Yusuf Islam) isn't bad. This box set also offers a choice opportunity to reassess a deserving career. (All royalties go to New York City relief victims and orphans and homeless families in underdeveloped countries.)

Although Sweet Child is usually cited as the group's high-water mark, Basket of Light finds them at their most progressive and exciting. Highlights of this album – which actually reached the Top Five in the U.K. – include the buzzing jazz dynamics of "Light Flight," their moving rendition of the traditional folk song "Once I Had a Sweetheart," their reinvention of the girl group smash "Sally Go Round the Roses," and "Springtime Promises," one of their finest original tunes.