Lockn’ Festival Day three brought the biggest weekend surprise when Trey Anastasio stuck around and joined Furthur for a bunch of tracks including “Casey Jones” of the end of their Workingman’s Dead set. JamBase has audio up from the sit-in which included Trey jamming on “Casey Jones” then sticking around for “Scarlet Begonias”, “Fire on the Mountain” and more. We had Christian Johansen on site to shoot photos of the festival for us (but we missed the Trey sit-in due to the photo pit rules), so read on for his shots from day three featuring the Punch Brothers, Furthur, Widespread Panic, Trey Anastasio Band, and more. –Editor