In the mid-1960s Mac Rebennack a.k.a. Dr. John was banished from his beloved New Orleans by a medieval penal system mindset that incarcerated him in a Texas rehab center and prohibited him from returning to his home, all for the crime of having a drug habit. The incident was so troubling to him that he made it the prelude to his autobiography. Rebennack, whose life revolves around the music of New Orleans, a tradition handed down to him by eld...