(1985) Co-wrote, co-produced and sang backing vocals on Chaka Khan's single "Love of a Lifetime", released in January 1986.
(1982) Duetted with Annie Lennox on a cover of Sam & Dave's "Wrap It Up", released as a track on Eurythmics's 1983 album "Sweet Dreams (Are Made of This)".
(1984) Provided backing vocals on Elvis Costello's single "I Wanna Be Loved".