Four decades after first spinning its mesmerizing harmonies, the Detroit quintet finally receives its true due. This three-CD boxed set lovingly lays out the group’s extensive catalog and doubles as an R&B primer. Discovered by the Moonglows’ Harvey Fuqua, the Spinners (né Domingoes) have done it all from doo-wop to dance. The ex-Motown group clicked big-time on Atlantic, teaming with Philly soulster Thom Bell and gospel-weaned singer Philippé Wynne. Divided into three distinct career periods, it’s all here: hits (“It’s a Shame,” “Mighty Love”), classic tracks (“I Don’t Want to Lose You”), rare gems (“We’ll Have It Made”) and tributes (David Bowie, Dionne Warwick). One of a kind, indeed.—GM