Sunburster opens tonight’s bill at Underground Arts featuring The Sword. To be more specific, it might be said that the group will take the stage by storm. Sunburster oozes with an air of instinctual intensity as though there was never any other choice – a full-speed charge mentality. Led by the heavy-thudding bass and “smack you in the face” percussion, the band is reinforced by menacing guitar riffs and guttural vocal displays. The outcome is a primal power that is out of the cold, sludgy darkness, emerging into a roaring musical fire that refuses to be squelched. They will be joined by the multi-layered, riff-generating onslaught of local doom-metal outfit Serpent Throne, who will be orchestrating a thick menacing foundation. Underground Arts, 1200 Callowhill St., 7:30pm, $18, 21+ – Michael Colavita