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,

Billy Joel may have been married more than once, but only one ex-wife has her own theme song. In HBO's new documentary Billy Joel: And So It Goes, the music legend opens up about his marriage to supermodel Christie Brinkley - and the unraveling that followed.

Billy Joel is sharing a health update months after the cancellation of his tour, which was the result of his being diagnosed with normal pressure hydrocephalus (NPH), a condition that affects the brain.

And So It Goes,” directors Susan Lacy (“Spielberg”) and Jessica Levin delve into how the singer’s complex and often tumultuous life inspired songs that turned him into a rock legend. Joel, a six-time Grammy winner and Rock & Roll Hall of Famer,

Billy Joel opens up about family and his music in the new HBO documentary, "Billy Joel: And So It Goes." Part I aired July 18. Part II comes July 25.

And So it goes,' the Piano Man shares how he quickly composed one of his most famous songs, "New York State of Mind."