Among producers, his name remains the simile of choice. If some hotshot studio whiz emerges in, say, hip-hop, he's inevitably labeled "the Phil Spector of rap." That's quite a statement given that decades have passed since this boy from the Bronx remodeled rock & roll to suit his own visions of grandeur. The story of the girl-group auteur is a fascinating one. Spector composed a No. 1 hit at 17 (the Teddy Bears' "To Know Him Is to Love Him," its title inspired by the inscription on his father's tombstone). By 19 he was head of A&R for Atlantic Records. By the time he was 22, he'd founded his own label (Philles) and was churning out Wall of Sound hits at an unprecedented clip, beginning with the Crystals' "He's a Rebel." The four-disc "Back to Mono" befits its singular subject in both presentation (the richly annotated booklet includes a piece by Tom Wolfe) and content (60 songs cut between 1958 and 1969, plus the entire classic Yuletide LP "A Christmas Gift for You").--Steven Stolder