Since its, uh, debut MP3 made the rounds this winter, Yeasayer has bewitched me with its full-tilt weirdness. Clearly the product of a post-TV on the Radio world, the quartet keeps shifting its sound around in what-the-fuck ways. One minute the whole mix is warped by walls of vaguely fonky deep-space reverb; the next, a fretless bass has somehow gotten involved. The band's first proper release, -"Sunrise" (a 12-inch single on Monitor), sounds like a best-of-Brooklyn amalgam--TVOTR, Animal Collective, the Rapture's housey builds---on paper, admittedly a revolting prospect. The secret is Yeasayer's seemingly unlimited access to odd leavings of the 80s previously unreaped by the American underground. You may be racking your brain all day before you realize that a vocal melody is lifted from Christopher Cross's "Ride Like the Wind" or side two of the Ladyhawke soundtrack. It makes no sense that putting all these things together could even be good, let alone as awesome as this. Frog Eyes headline, Yeasayer plays second, and Mittens on Strings open. a 9 PM, Schubas, 3159 N. Southport, 773-525-2508, $10, 18+.