For a night that lays claim to “balladeers, hauntologists, super-8 soundtracks, audio-archaeologists, occult circuit-benders” and more, the Heretics’ Folk Club certainly delivers on the unusual. That’s part of the thrill as we fold ourselves into the nooks and crannies of Cafe #9. Aside from a few rather opaque genre signposts, no one really knows what to expect.