For their previous releases, THESE ARMS ARE SNAKES devised a uniquely enervating combo of bratty, straining, deliberately abrasive vocals and twitchy, self-indulgent mathcore. This Seattle band’s second full-length, the new Easter (Jade Tree), is even grimmer than those records–it’s full of nasty surprises to keep you feeling ill at ease, and its rhythms and structures feel put together sideways, so that even the stop-start build-and-crash dynamics seem to be rising and falling in loops and tangles rather than straight lines. Thankfully the righteous screaming and grating noise are still broken up here and there by swatches of song you can sing along to. –Monica Kendrick

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These Arms Are Snakes headline, Mouth of the Architect plays third, the River City Tanlines go on second, and the Young Widows open. a 8 PM, Beat Kitchen, 2100 W. Belmont, 773-281-4444 or 866-468-3401, $10 in advance, $12 at the door, 18+.