This progressive black-metal band from the small town of Plaistow, New Hampshire, whetted a lot of appetites with its four-song self-titled debut EP in 2012—including mine. Vattnet Viskar’s first full-length, last fall’s Sky Swallower (Century Media), had a lot to live up to, and it doesn’t disappoint—except that there’s not enough of it (and I’m old enough to remember when 40 minutes was considered a standard album length, not a little on the short side). These guys are environmentalists inspired by nature, and even though Sky Swallower is short enough to leave ’em wanting more, it’s got a lot of breathing room—stretches of eerie, contemplative calm, like a winter forest of ominously whispering trees beside a rippling lake. In its moments of glorious, mountainous grandeur, there’s not a growl wasted—the quiet valleys magnify the height of the stormy summits. If you want to feel the innate terror of the natural world, you can’t just tromp out into the woods—you have to be quiet for a while before it really hits you hard. —Monica Kendrick Vaporizer and Ironfinger open.