It was 1962, and the rock and roll record business was on the rise after the multiyear slump that had followed the debuts of artists like Elvis, Chuck Berry, and Little Richard. The industry’s savior, in large part, was a manic, diminutive, wig-wearing, Hollywood-based record producer (and future convicted murderer) named Phil Spector.

The mastermind behind such throbbing, multi-instrumental hits as “He’s a Rebel,” “Da Doo Ron Ron,” and “Be My Baby,” Spector was a gesticulating wunderkind on the other …