It is strange that, as has already been pointed out, he dies before so many scheduled concerts. The true cause may be stress. However, this is from a man who has wanted to conceal his identity for many years, and escape the eyes of the media- think of the strange guises he has adopted over the years, and the way in which he has concealed his children in public. He is a strange misunderstood man, but he has money. I believe that he would be able to pull off such a "vanishing" act and adopt another identity quite easily. Nobody knows what he actually looks like without all the makeup, hair and sunglasses.