woa, these kids are a-ficking-mazing! If anyone watched Leno last night they were on and they blew me away. They are 5 siblings who all went to Juliard for piano. All play at once and each takes a different part trading off solos and harmonies, etc. They do classical but also a really wicked West Side Story medley. It's hard to believe they are only 19 to 25 years old!
http://hometheaterinfo.com/the_5_browns.htm