Helloween's live performance of " Dr. Stein" in Sao Paulo during their " United Alive" world tour showcases the band's classic hit from " Keeper Of The Seven Keys Part I I." The concert, part of a larger tour documented in the " United Alive" and " United Alive In Madrid" releases, features over three hours of live footage, interviews, and exclusive content, highlighting the band's enduring legacy in metal music.