Michael Jackson debuted on the professional music scene at the age of 5, as a member of The Jackson 5, and began a solo career in 1971 while being a member of the group, known as the "King of Pop" , five of his solo studio albums have become some of the world's best-selling records: Off the Wall (1979), Thriller (1982), Bad (1987), Dangerous (1991) and HIStory (1995). Thriller has remained the biggest selling album of all time with estimated sales of 110 million. His legacy will forever remain.