First, don't wonder, the only French sentence I can speak is probably Legammanexistepa, and I would even have to look up the spelling. Still, I have an excellent phonetic memory, and the title of the song I'm after, and which played an age ago as an act during "Jeux Sans Frontières" is "Ils sont là bas" (so much I found out myself, . The refrain, phonetically, is "Lüüsi copy lää", which more sounds like Finnish, and I was not able to turn that into meaningful French. Googling or Youtube brought nothing up either. Anyone who can help me to the lyrics of the song or at least have an idea what my "Finnish" really means?
EDIT: Using the phonetic table, "Lysi kɔpi lɛː".