I had just returned from a colonoscopy. The Doctor had removed a number of polyps and one in particular hurt once the anaesthesia had worn off. I was lying on my couch when a friend called. He had been a music teacher and colleague. I explained where I was at and he suggested that I sing a soothing song to relieve the pain. I thought “really?”
And then I changed my mind. Channeling the vibration to the point of the pain I sang. By the time I was done, the pain was gone.