Rio Sonata: Nana Caymmi.

Featuring images from concerts that marked the history of Brazilian music and interviews with major personalities, Nana Caymmi, one of the greatest artists of Brazilian popular music, has her story analyzed and revisited. The ex-wife of Gilberto Gil, muse of Milton Nascimento, and daughter of Dorival Caymmi, Nana is considered by many journalists to be "the singer of singers," and the leading names of the era attempt to explain why.