San Francisco folk-rock trio Owl Paws contrasts acoustic tones with a punk rock presence. When the band opens the three-act show this Tuesday at the Chapel, you'll hear a sound that hints at early-'00s indie-emo acts like Brand New, but rounds off with the modern folk elements of artists such as the Milk Carton Kids. A song like "The Fields" showcases Owl Paws' melodic dynamics and skilled musicianship. Singer-guitarist Derek Schultz croons aching melodies, while bassist Tim Vickers articulates complex, finger-picked phrases on a stand-up bass. And as for drummer Lucas Siobal, his unpredictable rim shots and bell strikes add an unforgettable color to the rhythm section. The end product resonates pure heart.