On September 1, 1980, Iron Maiden performed at the Rainbow Theatre in London, showcasing their early work with the song "Phantom of the Opera." At this time, the band had just released their self-titled debut album, "Iron Maiden," in April of the same year. This live recording is significant as it captures Iron Maiden during a pivotal phase in their career, shortly after their formation and initial rise in the heavy metal scene. The performance features Paul Di'Anno on vocals, whose raw style was a defining characteristic of the band’s early sound. This concert highlighted their energetic stage presence and marked the beginning of their reputation as a formidable live act. Additionally, the band's lineup at this time included key members like Steve Harris and Dave Murray, who would remain central to Iron Maiden's identity and success in the decades to come.