La Blogothèque has to be one of my favourite blogs, though I'm not going to pretend that my GCSE French carries me through well enough to read it in its native language. Fortunately, music is a fairly universal language, and most of the artists they review are Anglophones.
Their 'Concerts a Emporter' feature is among the best of the like out there. The cinematography is actually pretty good, and if you have a few minutes to go back through their archives it's like a who's-who of both well known and more obscure folk and indie music since 2006.
Here's an old favourite featuring Mumford and Sons. And Johnny Flynn. Attempting to sing in French. Brilliant.