"Rill Rill" is the most accessible song on Sleigh Bells' loud, abrasive and wonderfully distorted debut album Treats. But that doesn't mean it's not daring. The song begins in a jangly dreamlike haze, then morphs into a bold, bring-it-on mantra about early high school life. ("Wonder what your boyfriend thinks about your braces?/ What about them?/ I'm all about them.") It's light and young and like nothing your parents — heck, even your older siblings — ever listened to. This song just sounds new.