While they weren't a Philly soul group in the strictest sense, no overview of the greatest recordings written and produced by Kenny Gamble and Leon Huff -- or most of the scene's other major figures, including Linda Creed, Thom Bell, and Dexter Wansel -- would be complete without the Jones Girls. Like fellow Detroiters the Spinners and Ohio's the O'Jays, the Jones sisters added Midwest flavor to the lush Philly sound, and they elevated their material with sibling harmonies as impeccable as those of the Pointer Sisters, the Emotions, and Sister Sledge. In the process, the Jones...