Relax Music Based on a small-scale 2017 study, listening to music in headphones though beneath community or normal anesthesia can reduced cortisol concentrations through operation, and decrease publish-op pain and stress. Dr. Daniel Levitin, of McGill University in Canada, and colleagues mention this principle inside of a 2013 overview, citing https://www.youtube.com/watch?v=BkaFW11OGEs