I recognize Norman Blake, Sam Bush, Tut Taylor and Vassar Clements (that's Mike Compton singing and picking the tenor guitar). The guy who posted this on YouTube provides complete credits. It's from a 11/18/2000 concert featuring a reunion of John Hartford's Aero-Plain Band. A DVD of the complete concert is available from Tut Taylor's Web site at http://webpages.charter.net/tutbro/. Who says bluegrassers can't play the blues?!?!