Paul McCartney Wings and decided he needed a change. The group disbanded in April 1981 after Laine quit following disagreements over royalties and salaries. In 1982, McCartney collaborated with Stevie Wonder on the Martin-produced number-one hit "Ebony and Ivory", included on McCartney's "Tug of War" LP, and with Michael Jackson on "The Girl Is Mine" from "Thriller". "Ebony and Ivory" was McCartney's record 28th single to hit number one on the "Billboard" 100. The following year, he and Jackson worked on "Say Say Say", McCartney's most recent US number one . McCartney earned his latest UK number one with the title track
Stevie Wonder platinum-selling single album, and its single "Happy Birthday" was a successful vehicle for his campaign to establish Dr. Martin Luther King's birthday as a national holiday. The album also included "Master Blaster (Jammin')", "I Ain't Gonna Stand for It", and the sentimental ballad, "Lately". In 1982, Wonder released a retrospective of his 1970s work with "Stevie Wonder's Original Musiquarium", which included four new songs: the ten-minute funk classic "Do I Do" (which featured Dizzy Gillespie), "That Girl" (one of the year's biggest singles to chart on the R&B side), "Front Line", a narrative about a soldier in the Vietnam War