In 1972, on the Mike Douglas Show, John Lennon was the host with his Plastic Ono Band. He was allowed to invite another musical guest, so he picked his hero, Chuck Berry.
They get on stage and are playing the song "Memphis" and having this great moment. But good ol Yoko, talentless and being the succubus she is, just couldn't let John have his moment. She grabs a mic and begins this crazy screaming. The look on Chuck Berry's face is hilarious as he's confused at first then just wants to strangle this person.
The second song was Johnny B Goode and anticipating she would do this again? The sound engineer, cleverly cut off her mic and you can see her try it again, but to avail.
So not every hero wears a cape: some? Run the soundboards lol