Concerts in France

Hello
 
I'll be in a week in Bretagne, in France. Does anybody knows about concerts that will take place there (specially in Ile et Vilaine area or Rennes). Or a website that could have this information?
 
 Thank you.
 
Pd - Keiji Haino and Joelle Léandre played in the Pyrénnées region earlier this week. I would like to have been there!
 
Regards
Rafael.