Without any expectations, the opening of JR Robinson’s new, one-track album as Wrekmeister Harmonies, Then It All Came Down, might sound comforting. The spectral chorus, chiming bells, fingerpicked acoustic, and resonant strings should cozy up to anyone who’s fond of avant-garde composition or expressive post-rock in the vein of Godspeed You! Black Emperor. But this is an album from a guy who plays an annual concert in a Chicago cemetery and has serious connections to black metal. Something dark, brooding, and punishing looms.