The photo shoot for the Green Day frontman's cover of SPIN's "Under the Influence" issue, in which he interviewed his idol, Replacements rocker Paul Westerberg, transformed into an impromptu concert.

"Billie Joe opened up for the photographer, Francesco Carrozzini, and played a few tunes from his band's Broadway play American Idiot for all of us," Egiziano says of this candid moment.