Let's say a Soviet exchange student back in the '70s would go back and tell the KGB about people and places and things that he'd seen and done and been involved with. This is not really espionage; there's no betrayal of trust.
“I think my purpose was just to get out and sing. I love to sing. I wasn't even in it for the - you know, the prize. I was, like, 'Hey, man, I'm going to sing.'”