Four studies done between 2001 and 2010 in Cleveland, Ohio’s MetroHealth’s burn unit show decreases in patients’ pain levels when they participated in music therapy before and during their dressing changes. “The results weren’t based just on the patients’ say-so, but on measurements of stress hormones, respiration and heart rates, and patients’ assessments of pain levels (that’s a standard practice that helps doctors and nurses decide how much pain medication to administer.)”