UNSUNG HEROES OF SOUL #Willie Mitchell

Syl Johnson was a blues-based soul singer whose recordings were sampled by the likes of Wu-Tang Clan, Jay-Z, Kid Rock and Kanye West.

Ann Peebles sold albums and singles to the soul market throughout the 1970s, but never really broke through to the pop audience. Her biggest crossover hit, "I Can't Stand the Rain," reached a modest #38.