Hi Dave, Forgot to tell you that you should probably discuss the headaches with a GP. He might want you to have a CAT SCAN or MRI to rule out tumors, calcium or metal deposits, faulty veins etc. And it wouldn't hurt to check your ears and throat for infections. As a singer you really don't want a throat infection. You have such a great voice, I sure don't want you to take a chance and lose it. I just rattled on and on and on--being chatty! While all that stuff is going on--you should still see a GP--just to make sure it isn't something other than CPAP side effects! Berneta x