Jackson's 1982 album Thriller became a worldwide sensation and established the artist as a transcendent superstar. "Jackson is the biggest thing since the Beatles," TIME declared. Thriller sold 45 million copies, the most of any album in history until recently; at its peak, more than a million copies flew off shelves each week. When the title track's 14-minute video which redefined music video as an art form aired in December 1983, MTV aired it twice an hour in response to popular demand. The next year, the album won a record eight Grammy Awards.