Argh. So much French music I'd love to post.
There's a cover of this in "8 Women", one of my favourite French movies
Obviously this is just super famous.
You may remember this for 500 days of summer.
Yelle are probably my favourite french band
This whole album is great - it's called "le fil" which means the thread as there is a single note that runs the entire length of the album.
This is just a piano piece, but it is French, and written for the Amelie soundtrack, which is very French
I know this is in English, but he is French