Did you ever see that Jack Black movie School of Rock? The kids in the movie are amazing. The kids in the following video would blow them out of the water. Check it out: Black Sabbath's "War Pigs" by Motion Device. The vocalist is 10 years old at the time of this video! (She has the Ozzy look down, but really nails the second verse.)They've done other covers and Sara, the vocalist, gets better.