A line drawing in black of a spotted leopard holding up an ear trumpet below black text, all on a white background.
Def Leppard is an English rock band formed in 1977. They are associated with the "glam" metal style that they popularized along with other bands such as Mötley Crüe, Poison, Quiet Riot, and Bon Jovi during the 1980s. In 1980 the band released their debut LP On Through the Night. The first track of the album was "Rock Brigade" and as a single it was released with "When the Walls Come Crumbling Down" as the B-side. The artwork of this button appeared on the single's cover.