There is a delightful uncertainty associated with a new Boris album. The Japanese three piece have spent twenty-five years keep metal fans on their toes with aplomb. Every new release brings with it a myriad of questions of style, tone and content that makes the pre-release period surprisingly fun. This extends to the first few runs through the record. Each iteration uncovers unexpected turns, subtle slivers of sound folded deeply into the mix and new tapestries of noise that you somehow missed. The only real guarantee that the group offers is that things are going to get exceeding heavy at…