FOLK rock icon Joni Mitchell endured an abusive affair with an insanely jealous drummer who beat the hell out of her and even tried to pimp her out to a superstar pal. The 73-year-old Both Sides Now singer’s brutal affair with legendary jazz drummer Don Alias comes to light in author David Yaffe’s just-released bio, Joni, Reckless Daughter. “Don was irrationally jealous and beat me,” Mitchell confesses. “He thought I was cheating on him. He invented it. Probably because he was on the road all the time. Get this story and many more in GLOBE Magazine -- available at your nearest supermarket, newsstand or Wal-Mart.