Nina Simone was an extraordinary artist, a singer with an amazing, androgynous voice, a pianist from the age of four, a master of many styles (yet each one made distinctively her own), and a performer who put an amazing amount of herself into every song she sang. But she was also a frequently unhappy woman, a sufferer from manic depression, and while she was involved in the struggle for black civil rights in the United States, she did not allow herself the indulgence of viewing the outcome of that fight with satisfaction. 'What Happened, Miss Simone?' tells the story of her life and career with songs, comments from friends, and extensive excerpts from interviews she gave. It's fascinating, but also overlong, and while many assert the Nina was a difficult woman, few actually describe the reality of living with her in detail, which is a bit frustrating: she was a private person when not on stage, and the frailties hinted at in her public performances are never completely explained. You finish this documentary wanting to know more; but also, perhaps, feeling you could have been told what you've just learnt in a little less time.