Paul McCartney and Michael Jackson collaborated on several projects, creating a fusion of pop, rock, and soul music. McCartney, a former member of the Beatles, and Jackson, a solo artist notable for his contributions to pop music, had significant influences on each other's work. Their most recognized collaboration is the hit single "Say Say Say," which showcased their harmonious blending of styles and voices. Their collaboration remains a significant touchstone in music history, illustrating the potential of cross-genre partnerships.