Those PS22 choir kids, responsible for putting a most endearing spin on indie-rock hits and Journey songs alike, have now taken a stab at Beach House’s “Zebra.” Wistful dream-pop no more — more like playground swaying singalong. Hey, kids, wanna play the Northside Festival?! Seriously. Wanna do a showcase? We’re going to make a request for you do “Empire State of Mind” though, just a warning.