 Early groups he worked with include the Doodletown Pipers and The Cultures.In the early 1970s, Gilstrap was one of the backing vocalists in Stevie Wonder's backing outfit, 'Wonderlove', appearing on Wonder's albums, "Talking Book" and "Innervisions".Gilstrap sang the opening two lines of the Wonder song, "You Are the Sunshine of My Life" (with Lani Groves singing the next two lines).