By June 30, 2019, when The Killers performed "Always On My Mind" with Pet Shop Boys at Glastonbury Festival, the band had recently released their fifth studio album, "Wonderful Wonderful," in September 2017. This album marked a significant moment in their career, debuting at number one on the Billboard 200 chart and showcasing a more introspective and mature sound compared to their earlier work. The live performance at Glastonbury highlighted not only their festival legacy—having first played at Glastonbury in 2004—but also their ability to collaborate with iconic artists like Pet Shop Boys, further solidifying their status in the music industry. The choice to cover the classic track, originally a hit for Pet Shop Boys in 1987, also underlines The Killers' respect for musical history and their capacity to bridge generational gaps in pop music.