Steeped in a wild mix of styles, Portland's Shannon Entropy extend beyond the parameters of so many other local pop-rock bands. Tonight's release show celebrates their debut, Tamale EP. It's a study in musical dynamics, with opening track "Caves" blipping in with electronic rhythms, lulling your senses with a slow-burning verse sung by Tamsyn Cox and backed by David Hickey, unfurling a lushly textured melodic pop downer. The jazzier intricacy of "Pimpilla" furthers the experimentation of smashing a groovy R&B foundation with flourishes of hip-hop, electro-psych, and more. By the time you get to the album's likely single, "Janky Leg," the band switches gears again to a watery island-pop that fusses in funk-tinged grooves and a big chorus. The tape release is limited to 200 copies, so pick one up while they're hot. RYAN J. PRADO