A dominant figure in pop since the early 1980s, Michael Jackson transformed the world of music and quickly became one of the most influential artists of all time. In his astounding career, he was twice inducted into the Rock and Roll Hall of Fame, voted the Most Successful Entertainer of All Time, and accumulated 13 Grammy Awards. His breakout album Thriller has sold more than 100 million copies worldwide. Jackson remained in the media spotlight as much for his troubled personal life as for his music, however, and speculations about his physical and mental health circulated up until his sudden.