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You can draw a nuanced line from Double Dagger’s atypical art punk to the fact that two-thirds of the Baltimore band runs a graphic-design studio known for its clean and witty inventions, but really, the first thing you need to know is this: Double Dagger’s visuals are fantastic. That they look like pasty everymen puts them in a string of nerdy post-hardcore groups stretching from Frodus to Lightning Bolt—and like those bands, Double Dagger juxtaposes its members’ ostensible plainness with destructive, unpredictable live sets. (Stand close to the stage, and expect to make physical contact with frontman Nolen Strals.) The songs include two-minute ragers, lengthy and elliptical dirges, and way more intellectual wankery than an outfit with no guitarist should be able to get away with. It’s too bad this tour is Double Dagger’s last: This band isn’t meant to be remembered through the inevitable posthumous releases.

Double Dagger performs with Imperial China and Holy Ghost Party at 8 p.m. Black Cat Backstage, 1811 14th St. NW. $10. (202) 667-7960.