I have changed a couple of words according to the lyrics that can be normally found on the web.
You may want to change you translation as well:
Mélodie d'amour chantait > chante
L'amour étant > est un
https://www.youtube.com/watch?v=6eWPVJf8g2I
http://www.metrolyrics.com/emmanuelle-lyrics-pierre-bachelet.html
https://www.vidimovie.com/videos/watch/pierre-bachelet-emmanuelle-song-p...
https://www.youtube.com/watch?v=jjJGTkWJDAM
The translation is done by Bahareh Tajfirouz.Please ask for permission if you would like to use or reprint it.