The newly added details confirm that Bruce Dickinson’s guest appearance came during a broader Coverups set packed with rock and pop covers at San Diego Comic-Con’s Fandom Party. The Iron Maiden singer joined Billie Joe Armstrong for “All the Young Dudes”, a song linked to both David Bowie and Mott the Hoople, making the performance a crossover between two prominent rock frontmen.

The event was held at San Diego’s Hard Rock Hotel as a joint celebration of Marshall’s new Dookie amplifier and the annual Fandom Party. Dickinson had previously recorded the song on his 1990 solo album, *Tattooed Millionaire*, and was in the city to present at the Eisner Awards; Iron Maiden’s North American “Run For Your Lives” tour starts on 29 August with Megadeth and Anthrax supporting.