“Mary Jane” is a song by American funk singer Rick James. It premiered in September 9, 1978 as the 2nd single from his debut album Come Get It! . The song peaked at the top five to the R&B graphs in the USA in 1978.
As one of the earliest hits as a solo performer, it’s among his most prominent tunes. It was written by James, together with keyboardist Billy Nunn, who had been imputed to the radios, keyboards, background vocals, helping to compose the tune, organizing flute components, and additional instrumentation work.