In 1958, he had one of his first major songwriting credits. He co-wrote and recorded “I Need Your Lovin'” for the Hanover label. It was covered less than a year later, in 1959, and became a #14 R&B hit for Roy Hamilton.

At Motown, he gained fame as Stevie Wonder’s mentor and main producer, during Wonder’s teenage years. He also sang backup vocals on Wonder’s top-ten version of Bob Dylan’s “Blowin' in the Wind”. Paul also produced early Temptations records and wrote/co-wrote such hits as “Until You Come Back to Me (That’s What I’m Gonna Do)” originally for Wonder, and later given to Aretha Franklin who made it a #1 hit, and “Hitch Hike” for Marvin Gaye. Paul relocated from Detroit to Los Angeles in the early 1970s.