Four songwriters playing unplugged in the famously haunted CB2 Basement, taking full advantage of the accidentally amazing natural acoustics down there, all held together with the warm and affable compering of host and 3rd act Russell Swallow. I tend to think the atmosphere of a night filters down from the mood of the organizer, so as we were informed payment was an option not a requirement and handed a heart-shaped chocolate on entry, you could tell it was going to have a good vibe.