In 1981–1983 Mercury recorded several tracks with Michael Jackson, including a demo of "State of Shock", "Victory", and "There Must Be More to Life Than This". None of these collaborations were officially released at the time, although bootleg recordings exist. Jackson went on to record the single "State of Shock" with Mick Jagger for the Jacksons' album "Victory". Mercury included the solo version of "There Must Be More To Life Than This" on his "Mr. Bad Guy" album. "There Must Be More to Life Than This" was eventually reworked by Queen and released on their compilation album "Queen Forever" in 2014. In addition to working with Michael Jackson, Mercury and Roger Taylor sang on the title track for Billy Squier's 1982 studio release, "Emotions in Motion" and later contributed to two tracks on Squier's 1986 release, "Enough Is Enough", providing vocals on "Love is the Hero" and musical arrangements on "Lady With a Tenor Sax".