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The members of Canada’s Shapes and Sizes look like the kind of timid, if not slightly anemic, kids who spent their collective youth shunning sunlight and holing up with C.S. Lewis novels. So it was probably only a matter of time before their twee dalliances with pop, folk, and quirky-yet-understated arrangements crossed the border and popped up on Asthmatic Kitty’s radar. The home of Sufjan Stevens rereleased Shapes and Sizes’ 2006 self-titled debut and also put out this year’s Split Lips, Winning Hips, a Shiner. While the quartet strives to keep their fingers in as many genres as possible, its liberal use of horns and interplay of male and female vocals is reminiscent of the dreamy pop of the Ladybug Transistor. In other words, look forward to Ira Glass waxing wistful on This American Life while Shapes and Sizes plays in the background. Shapes and Sizes performs with Yeasayer at 9 p.m. at the Black Cat, 1811 14th St. NW. $10. (202) 667-7960.