Live-music...
Ciara:
http://www.youtube.com/watch?v=PP4Yufn4Z_A
Rihanna:
http://www.youtube.com/watch?v=envYjehnvLg
Pussycat Dolls:
http://www.youtube.com/watch?v=OTP-PHeA5Ac
Celine Dion:
http://www.youtube.com/watch?v=BoN8YZsFmUU&feature=PlayList&p=E68C3A3AAC23D7A4&index=21
Beyonce & Josh Groban:
http://www.youtube.com/watch?v=CC9i8istp6Q