Chaka Khan

First exercising her considerable vocal talents with Funk outfit Rufus, Chaka Khan has gone on to reinvent herself numerous times, most notably in the mid-1980s with the pop hit "I Feel for You" and again with her smash dance hit "I'm Every Woman," which Whitney Houston re-recorded in the '90s. Perhaps even more revered for such slow, funky numbers as "Tell Me Something Good," Chaka Khan's voice possesses remarkable depth and range, making her one of the reigning queens of Soul.