Music can be a potent salve for a broken heart, but could it soothe surgery or workout pain? A hospital study has found that patients who underwent cancer surgery showed decreased levels of anxiety, pain and irritation when exposed to ambient music. Humans have longed combined tunes with physical work — from chain-gang chants to workout playlists — and research shows this makes bodies more efficient. And those who make music while working out use less oxygen and feel less exertion. So, go ahead — hit the high notes: It’s good for your health.