MusicRadar says:
He may be more famous for playing Fender Rhodes pianos and the Clavinet, but Stevie Wonder’s classic ‘70s albums would have sounded markedly different if he hadn’t also been experimenting with synths (check out the Moog bassline on Boogie On Reggae Woman from 1974’s Fulfillingness' First Finale). He was aided by Malcolm Cecil and Robert Margouleff (AKA Tonto's Expanding Head Band), who were key to helping Wonder bring his inner synth visions to life.
Your votes:
“Malcolm Cecil and TONTO's expanding headband or the brilliant Tomita and Snowflakes are Dancing. Stevie Wonder used TONTO on most of Innervisions I think. Vangelis's Heaven and Hell or Blade Runner. I saw Kraftwerk on their Autobahn tour, real pioneering stuff. Did I mention Keith Emerson?” (Thanks, bbcoz)
"Stevie Wonder for sure." (From Paul via Facebook, thanks)
“For me, it has to be Stevie Wonder. The things he did with synths on his '70s records are just amazing.” (Thanks, matey)