There is so much data about the benefits of music before, during and after surgery. You can search by type of surgery or you can search by type of adjunctive intervention like music, relaxation tapes, aromatherapy or any of dozens of things! If you want to see some of the most recent, go to http://www.ncbi.nlm.nih.gov/entrez. Just do a search for what interests you most. Please let me know how I can help you!
You can also visit http://www.HealingMusicEnterprises.com/listmailings/email_temp_pain.html