Yeah, Bruce, and it´s an interesting way to share musical experiences.
Here goes a few links to have an idea:
http://www.youtube.com/watch?v=uPw3bYLx6uY
http://www.youtube.com/watch?v=SfdMCXDEmSA
http://www.youtube.com/watch?v=0Go1EYGagtA
http://www.youtube.com/watch?v=F9xlhGVF-NU
cheers
Joe