If they haven't been already, Puro Instinct, formerly Pearl Harbor, are a profile in your local alt-weekly waiting to happen; a pair of very young sisters (Skylar Kaplan is 16, Piper 23) who dropped high school for independent study and rep second-tier shoegaze influences make for pretty easy copy. But who are they exactly? It's a question that largely goes unanswered on their debut LP, , a record whose most distinguishing quality is the fact that it really doesn't have one: Whether you wish to parlay Puro Instinct into a discussion of precocity or whether they're truly about their Russian cultural references ("Stilyagi" loosely translates to "style hunter," or, if you prefer, "hipster"), won't do anything to get in your way.