This is my list right now (there may be mistakes and missing tracks):

 

1982 - Artisti vari 'The Secret Policeman's Other Ball; canta 'Roxanne'/'Message in a Bottle'/'I Shall Be Released' (cover)
1982 - Artisti vari 'Party Party' (colonna sonora); canta 'Tutti Frutti'/'Need Your Love So Bad' (cover)
1983 - Will Powers 'Dancing For Mental Health'; 'Adventures in success' scritta in parte da Sting.
1984 - Reflex 'The Politics Of Dancing'; cori in 'How Much Longer'.
1984 - A Bigger Splash; cori in 'I Don't Believe A Word'