Michael Jackson's 1982 album Thriller was a commercial and critical success that broke down racial barriers. It sold over 110 million copies worldwide, making it the best-selling album of all time. Thriller appealed to a wide audience through its infectious dance songs and Jackson's charismatic performances. However, the music also touched on darker themes through lyrics describing demons and the occult. The album's success helped expand the zombie genre in other media to a multi-billion dollar industry today.