Stevie Wonder was (and still is) a very soulful and talented musician. If you agree, check out the music of Jon Gibson, if you never heard it before. I really think you will dig it. (Did I just say "dig it"? Yeah, it's the wannabe hipster in me.)
Here's a link to an interview with Jon, and to a recording of his music. Share the information if you know of anyone who likes the music of Stevie Wonder.
By the way, as Jon points out in the interview, he's a white guy. Soulfulness knows no color.