(Barboza) Post-hardcore heavyweights Unwound called it quits way back in 2002, after frying faces throughout the ’90s alternative scene with their searing, feedback-laced rock. Now, Unwound frontman Justin Trosper (along with guitarist Brandt Sandeno and brother/sister rhythm section Kris and Meg Cunningham) has a new project, Survival Knife, who've just released their debut LP, Loose Power. For the most part, the new material jettisons the noisier, messier elements of Trosper's former band, instead opting for a straightforward, surprisingly catchy take on postpunk, all tightly coiled guitars and piston-pump drumming. Unwound fans may be taken aback by Trosper's new, Black Flag-influenced direction; everybody else will be more than satisfied pogoing along to the dueling guitar attacks of "Divine Mob" and "Name That Tune." KYLE FLECK
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If the word "math" triggers fear and alienation, don't fret. Sacramento's Tera Melos are one of the best "math rock" bands active right now, and you won't need a calculator to follow their muscular, reactive guitar work. In their wildly erratic yet seamless instrumental weaving, time signatures shift more rapidly than 21st-century wildfires and lightning-paced riffs diffuse into something else entirely within seconds. With last year's X'ed Out, the trio's melodic progressive punk provides a soundtrack for those who prefer music conducive to thinking or feeling rather than the absentminded neon grind. Tonight’s bill is also boosted with two of Seattle's finest exports into the math- and instrumental-rock canon: Postmadonna's post-caffeinated, hyper-spasmodic math rock has earned praise on these pages before. Their supercharged mad-scientist energy is currently unparalleled in Seattle for its catchy weirdness and sing-a-long-ability. With the young Eastside four-piece now signed to Tetra Records, parallel universe domination seems inescapable. Up-and-coming trio Heavy Petting should also impress those seeking smart instrumental rock; their expansive and powerful style flirts with lush and looming post-metal atmospheres. Crocodile, 8 pm, $10 adv. BRITTNIE FULLER
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