Billy Joel reveals that he twice attempted suicide in his new HBO documentary 'And So It Goes,' and that one of the attempts left him in a coma.

Billy Joel attempted suicide twice in his early 20s. The 76-year-old singer "felt like a homewrecker" after he had an affair with Elizabeth Weber while living with her, her husband Jon Small - who Billy was in a band called Attila with - and their son and when the truth emerged,