For some reason or another, the balmy South of England is wonderfully adept at spawning bracing doom and rancorous sludge. One wouldn't think that the area's posh gardens, chicken shops, and hippy-dippy seaside locales would inspire the kind of roiling hate and simmering disgust that usually informs these kind of lumbering, lightless dirges, but, so it does, and here we are.We recently premiered some slimy new tunes from Brighton's Sea Bastard, and are now pleased as punch to present a malodorous new track from the Bristolians in SONANCE, who are poised to release a new split EP with London's own thunderous trio, Torpor (who contribute a rumbling new song of their own). They both use post-metal's dynamic shifts as a touchstone, which gives the two slow-burning tracks a nice harmonic balance. SONANCE contributes "Under and Under," an atmospheric, triumphant dirge reminiscent of Neurosis' slow-building tectonic shifts, before it throws us for a loop with a burst of chaotic noise and drowned vocals. Torpor's "Jasager" eases in on a wave of ominous distortion before rumbling down into the depths of fuzz-crusted, impenetrable doom, illuminated only by a few flashes of almost hardcore aggression.The split is out digitally via Truthseeker on February 12, with a vinyl version slated for April 15 (preorder that here). Stream the whole kit and caboodle right here.