The singer's ex Katie Lee said Joel always had "a little resentment" toward her for pushing him to seek treatment.

Billy Joel opens up about DUI rumors, his friendship fallout with Elton John and his struggles with alcohol in the HBO documentary 'And So It Goes'

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.

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.

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,

Discover rare and unheard Billy Joel tracks, including live versions and new mixes, now available on Spotify and Apple Music.

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