Def Leppard emerged in the late '70s as part of the New Wave of British Heavy Metal, gaining popularity by blending glam rock with melodic elements. Their breakthrough came with 1983's Pyromania, which was followed by the massive success of 1987's Hysteria. Despite lineup changes and personal tragedies, including drummer Rick Allen losing his arm in a car accident, the band continued to tour extensively and release albums every few years, maintaining a dedicated fan base. Def Leppard's sound harked back to their glory days with occasional releases like 2008's Yeah! and 2022's Diamond Star Halos.

Originating in Sheffield in 1977, Def Leppard quickly gained attention with their debut EP, Getcha Rocks Off, and their full-length debut, On Through the Night, in 1980. The band's success peaked with Hysteria in 1987, but they continued to release albums and tour regularly, adapting to changing musical landscapes. Despite facing challenges such as the departure of members and the loss of guitarist Steve Clark, Def Leppard remained a prominent figure in the hard rock scene, culminating in their 2022 release, Diamond Star Halos, and subsequent collaboration with the Royal Philharmonic Orchestra on Drastic Symphonies in 2023.