“I don’t think it’s a secret that his drinking got pretty bad,” Brinkley said in Part 2 of the musician’s new HBO documentary, Billy Joel: And So It Goes. She said that the singer “couldn’t really remember what he did when he was drinking, and so he didn’t really know how he could hurt people.”

Billy Joel is opening up about a tough moment with longtime friend and tourmate Elton John. In the second part of the new two-part HBO Documentary, "Billy Joel: And So It Goes," the "New York State of Mind" singer shared how John's public comments that he needed rehab strained their friendship.

Now, a two-part HBO documentary is exploring the life, career and personal struggles of Billy Joel, providing an expansive look at the man behind the music. Billy Joel’s former business manager and wife,

A 115-song playlist covering Billy Joel's career hit YouTube, Spotify and other streaming services on July 26. Joel introduces many of the songs.

One topic the exhaustive doc doesn’t address is how Joel went from a scruffy aspiring metal head to a guy whose public uniform was a coat and tie.

"I didn't even know I had that many relatives," the singer said of visiting the graveyard where they were buried.

Billy Joel was welcomed by his parents, mom Rosalind and dad Howard, in 1949. Here's everything to know about Billy Joel's family, including his parents and siblings.

The HBO documentary about the singer and songwriter wrapped with a deep exploration of his tabloid troubles, creative process and decision to return to live performance.