Happy 43rd anniversary to Def Leppard’s Pyromania. It was released on January 20, 1983. Pyromania never reached No. 1 on the Billboard 200. It peaked at No. 2, and was held off the top spot by Michael Jackson’s Thriller. The album is certified Diamond and is one of the rare albums to sell over 10 million copies in the U.S. alone. Rolling Stone has included the album on their list of the 500 Greatest Albums of All Time and ranked it No. 52 on their list of the 100 Greatest Metal Albums. Billboard