Brooklynite singer-songwriter Katie Crutchfield is the prime mover of punk-tinged alt.folk act Waxahatchee. With two critically acclaimed full-length albums out on Don Giovanni Records—2012’s American Weekend and 2013’s Cerulean Salt—this project’s popularity isn’t projected to wane anytime soon. Simultaneously vulnerable and sure, punk-pop and twang, Waxahatchee’s intimate, emotional progression on latest release Cerulean Salt beckons all to swim in this sonic creek while the weather’s warm and the tickets are still dirt-cheap. Dip your toes in or completely submerge yourself in Waxahatchee Creek at Sister (407 Central NW) on Monday, April 21. This 21-plus shindig kicks off at 9pm, and tickets are only $5.