Joni Mitchell’s Mystery Illness Revealed by Friend David Crosby

Joni Mitchell, the iconic ’60s folk-rock singer, was found unconscious at her home in March suffering from a then-mystery illness. But close friend and fellow musician David Crosby, revealed in an interview yesterday what felled the pioneering artist. The 71-year-old singer, a chronic smoker, was rushed to UCLA medical center after collapsed in her Los Angeles home in the tony Bel Air neighborhood.