In September 2019, British heavy metal band Iron Maiden—genre pioneers with albums like The Number of the Beast (1982) and at the peak of the Legacy of the Beast World Tour, marking a return to classic sound after The Book of Souls (2015)—headlined Rock in Rio, sharing the bill with Slayer and Scorpions at Cidade do Rock before 100,000 attendees. The 90-minute show, captured in high quality, embodied tour climax, where Dave Murray and Adrian Smith's guitar riffs merged with Nicko McBrain's drum power and Bruce Dickinson's vocal intensity to spark collective ecstasy under Brazilian skies. Featuring tracks like "Aces High", "The Trooper", "Run to the Hills", and "Fear of the Dark", this performance highlighted their veteran status, turning the festival grounds into a realm of collective triumph.