Emilie Simon is a french singer/songwriter, sometimes called "Bjork of France" by the media over there (I don't find her so "Bjork" even so). She composes and arranges everything she releases and have some great songs and some amazing videos too ^^
http://www.youtube.com/watch?v=cI_nkXUpvJk
http://www.youtube.com/watch?v=z_1MR2XOjz4
http://www.youtube.com/watch?v=UMDunGVx7uU
http://www.youtube.com/watch?v=Qf5olM0v9-w