Adrianne Geffel was a one-of-a-kind artist, a pianist and composer with a rare neurological condition that enabled her to make music that was nothing less than pure, unmediated emotional expression. She and her sensibility are now fully integrated into the cultural lexicon; her music has been portrayed, represented and appropriated endlessly in popular culture. But what do we really know about her? Despite her renown, Geffel vanished from public life, and her whereabouts remain a mystery to this day. David Hajdu cuts through the noise to tell the full story of Geffel’s life and work, piecing it together through the memories of those who knew her, inspired her and exploited her --- her parents, teachers, best friend, manager, critics and lovers.