I happened across this chic when looking to watch an old Cat Stevens performance of "Moonshadow" (one of my favorite songs) a few months ago. Her voice is intense. I really dig these covers, and she has some quality new stuff she's working on as well. All I can glean from her YouTube page is that her first name is Joanna, and she's from San Gabriel, CA. So there you go. Check out all of her videos here.
Below: festouverture - "Moonshadow" by Cat Stevens [video]
Below: festouverture - "I Wanna New Drug" by Huey Lewis & the News [video]