Before Def Leppard released Pyromania, they were a promising hard rock band.

After it, they became global superstars.

Produced by Mutt Lange, the album blended huge guitar riffs, massive vocal harmonies, and radio-ready hooks into a sound that helped define 1980s rock.

Featuring classics like “Photograph,” “Rock of Ages,” and “Foolin’,” Pyromania sold over 10 million copies in the United States and became one of the most influential rock albums of its era.

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