And So It Goes' interviews all four of his wives and candidly examines singer's struggles with money, alcohol and critics

Take a look back at Joel's former partners, including Christie Brinkley, and get to know his current wife, Alexis Roderick Joel, too.

The “Just The Way You Are” singer, 76, recalled an instance in which he was knocked unconscious by his father after putting his own spin on Beethoven’s “Moonlight Sonata” during piano practice as a child. Howard, an accomplished classical pianist in his own right, required that all songs be performed as they were originally written.

I’ve long believed that the first hugely popular music you realize you hate is in many ways as important a discovery as the first music you realize you love. There’s something crucial and formative about the recognition that an artist whose music is beloved by millions makes your skin crawl,

In an exclusive preview clip from the new HBO documentary “Billy Joel: And So It Goes” that aired July 18 on TODAY, the "Piano Man" explains how classical music shaped the songs he has made during his decadeslong career.

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.