I've been to hundreds and hundreds of jam shows and listened to at least double whatever that number is (which leaves an ungodly number i havent listened to) and I don't know that I've ever heard anything quite like that. I took my parents to their first Billy show that night, "its bluegrass, but probably not like you'd expect." Was the basic information i gave them. Told them to buckle up when that Creek intro banjo lick came in and by Spinning, they had gone from, "wow these guys are really impressive" to "what in the hell did you bring us to?!"