Bruce Dickinson sang an a cappella version of "Chemical Wedding" at the 'What Does This Button Do?' talk show.
Bruce Dickinson's "one-man show" is coming to Brazil next year .
He recently spoke about the presentation, saying that he shares stories from his autobiography. He also takes requests from fans and answers questions.
To buy tickets for 'What Does This Button Do?' click here .
Check out the videos, recorded by fans, below:
READ ALSO: Bruce Dickinson wants orchestral version of Iron Maiden songs at show