The headliner was Cory Wong. Theo Katzman was a guest guitarist. And another band called Couch (I think) also performed. I think it was Cory Wong that had an old roommate that always wanted to sing at the Ryman. He introduced his friend and said he was going to let his friend sing, but since it was Halloween he was going to make him sing Wonderwall (sort of inside joke among musicians because it's not too challenging and it's overplayed) and wear lederhosen. Which is exactly what happened.