Biography
There are (at least) two artists with this name.
1) Barbara King was a soul/funk artist. Her song "What I Did in the Street" appears on the Sister Funk 2: The Sound of the Unknown Soul Sisters compilation.
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2) Barbara King is a jazz vocalist, reminiscent of Sarah Vaughan. Her debut album, Perfect Timing, was released in 2008.
Biography text from Last.fm, available under CC BY-SA.