During my one visit to the festival 30 years ago, the jams on the courthouse square were driven inside by rainy weather. So we had to settle for one single (very nice) session in the courtroom. I somehow managed to get myself invited on "stage" (in front of the jedge's bench) to sit in on washtub bass with the legendary Mr. Driftwood himself and a group of about a half-dozen pickers. A musical high point of my entire life!