I feel ya. I would have used ear plugs on stage years ago had I known I would be torchered daily by an evil high pitched screeching demon. That would take up residents in my inner ears. I use hear "O's" from the guitar store.

I have no faith in human perfectability. I think that human exertion will have no appreciable effect upon humanity. Man is now only more active - not more happy - nor more wise, than he was 6000 years ago. Edgar Allan Poe