The legendary George Michael passed away aged 53 on Christmas Day in 2016. but he is still celebrated as one of the all-time best-selling musicians, with an estimated 100 million to 125 million records sold globally.The legendary George Michael passed away aged 53 on Christmas Day in 2016. but he is still celebrated as one of the all-time best-selling musicians, with an estimated 100 million to 125 million records sold globally.