'True Soul Vol. 1 & 2' review: Soul musicians give a shout-out to their roots

Soul music has such a sense of place, it's small wonder it led to the creation of so many local labels. Buoyed by the talents of black entrepreneurship, the sound birthed far more than just its most storied imprints: Stax, Motown, Philly International and Hi. It also brought the world Minit/Instant in New Orleans, Ovide in Houston, Inter Soul in ...