unkwown song

[artopios]

Hello everybody,
I am looking for the title of a song wrotten until 1984 without words.
It was really famous these years and it is often played nowadays in clubs with disco music. Also, it is played as a realtone for mobile-phones.
Could you please help me and show me all the possible titles?
Thank you all in advance!

[s@int-Greece]

one of the famous song is "piano fantasia - song for denise" but is from 1985.