Hilarie Sidney is a musician most famously recognized as the longtime drummer for The Apples in Stereo. She was previously married to Apples in Stereo frontman and Elephant 6 co-founder Robert Schneider. Their divorce became publicly acknowledged in 2004. She was one half of the now defunct Elephant 6 duo Secret Square and, with now-husband Per Ole Bratset, she is currently a major creative talent behind The High Water Marks.