At one point, [Billy] said to me, 'You going deep?' And I said, ‘Yeah, and you know you’re going to go deep too,'" the film’s co-director Susan Lacy says.

The "Piano Man" singer said he got "punched in the nose, which I deserved," after telling his best friend Jon Small that he was seeing his wife, Elizabeth Weber.

Billy Joel will appear Monday on Bill Maher’s podcast, "Club Random," the singer’s first interview since canceling his upcoming tour dates in May following his diagnosis with a brain disorder.

The "Piano Man" singer is set to appear on the 'Club Random' podcast next week, with a video clip from the interview released on Friday.

"I’m tipping over sacred cows all my life. I like to do that," he said as he sat by his piano. "There is a code within the music itself that has nothing to do with the words, that takes you to this place, if it’s done right." This then led the "Piano Man" singer to talk about his love for classical music.