What are some good French jazz singers/ensembles/bands?

I'm looking for some good French jazz- you know like the kind with an
accordion, guitar, etc. It could be anyone, just nothing so obscure I
won't be able to youtube it. Thanks for your help!

This is the closest I have in my library, just for kicks.

http://www.youtube.com/watch?v=YAjMy5-tkKs

thanks again :)