Billie Eilish and Green Day’s Billie Joe Armstrong are the latest recording artists featured in Rolling Stone’s first-ever Musicians on Musicians issue which hits the stands Nov. 5, featuring 10 epic conversations between music’s biggest names. The teen-pop superstar asks her hero about early Green Day, staying sane in the industry, and that time he got into a fight with a guy in the audience. Interview highlights include:

Billie Eilish and Billie Joe Armstrong on the time he got into a fight with a guy in the audience:
EILISH “Hey, I don’t even know how to ask this, but what gave you the urge to, like, moon the audience, or kick people in the head and stuff?”

ARMSTRONG Oh, Jesus, kicking people in the head? Did I kick somebody in the head?

EILISH “There’s a video that’s the hardest shit I’ve ever seen. There was somebody in the crowd doing something, and you just jump on the person in the crowd. That was the hardest, most gangster shit. Like, what made you be so dope?”

ARMSTRONG “I think someone was getting kind of aggro, and then we started having a back-and-forth yelling at each other. And then I was literally fighting with someone in the crowd. I wouldn’t recommend it. Please don’t do it.”

EILISH “I won’t, but it’s dope that you did it. Also, I don’t have the same crowds. It’s a very different type of crowd.”

Billie Eilish on performing with Billie Joe Armstrong in the audience:
“I have never been so conscious of myself during a show than knowing that Billie Joe Armstrong was in the crowd.”

Billie Eilish on what advice she would give to her younger self:
“I don’t really believe in advice. Sometimes when I’m given advice, I do the opposite. It’s just how I’ve been my whole life. Nobody has ever been through exactly what you’re going through, ever. [Billie Joe] is the only person that’s ever going to live through what he has. So no one can know except this dude, and the fact that he’s still sane, he’s still gorgeous, he’s still him, having gone through all this shit? It’s like, I don’t even know.”

Billie Joe Armstrong on Green Day’s longevity and keeping it real:
“Even though it is tempting to sort of sell out, you have to keep being real. When it comes down to it, I have to wake up and look at myself every morning and respect what I do. And I don’t love everything I’ve ever done.”