Hey Bertrand, there's a cool little free festival not far from you in a few weeks, on the island Ile d'Yeu, with Sing Sinck Sing (featuring Efrim of Godspeed You Black Emperor) and Claire M Singer:
http://festival-variations.fr/category/ile-dyeu/
I know that island by heart, I used to spend my holidays there in my teens. It's quite amazing that Efrim is playing there