Well I believe when somebody said this could be Alain Souchon, he/she was on the wrong track (in double sense).
I had the occasion to listen to all his work relevant to this sample (from 1978 to 1988), and there was nothing that came even close. Also his close friend Laurent Voulzy didn't have anything appropriate.
http://www64.zippyshare.com/v/79725601/file.html
Please excuse the VERY bad quality.
I EQ'd the sample a bit, so that you can understand some lyrics (if you know French well enough, that is, I don't get anything except for (une) étoile).
Does this ring any bells with you French folks out there? Any help will be appreciated.