Sometime during 1990
Highlander II - The Quickening [Soundtrack]
Hughes sings lead on a track called "Haunted" which appears on the soundtrack to the film Highlander II: The Quickening though his contribution - played during some bar scene - is barely audible in the film itself, I'm told.
Albums & singles
Music From And Inspired By The Film Highlander II [cd/lp] : Germany 1990 Bronze Records 9031-73657