Mayhem has promised their follow-up to their 2014 record Esoteric Warfare on October 25, and it certainly looks like they're going to meet that deadline. The band is currently holed up at Ulver's studio in Norway, and you can watch bassist Jørn "Necrobutcher" Stubberud tracking 15 seconds of furious black metal below. At least once the cameraperson is done filming all those sweet Ulver records all over the walls.
