Thanks for posting pepon!
If I'm correct the woman singing with Alizée is the same one she was with back in may form this event.
http://alizeeamerica.com/forums/showthread.php?t=7760
Well I guess we will have some more vids of Alizée singing in Corsu kinda like this one soon.
Edit:
Well strangely enough I only watched that video just yesterday.