Nina Simone: a marketing nightmare.
Jazz/Soul/Blues/Broadway singer, both vulnerable and abrasive. Outspoken against discriminatory practices and against African-Americans who seemed to fall into stereotypes. Outspoken agains the white audiences that supported her career. A classically-trained pianist who could improvise with the best jazz trios and pound a piano like she was trying to kill it. Contradictory, brash, and powerful. Beautiful and ugly.
I was in love with Jeff Buckley before i ever heard Nina Simon's earlier version of Lilac Wine (neither of them wrote it). I far prefer her version. It's one thing for a person with a lilting, beautiful voice to make a lilting, beautiful song. But Simone--whose voice was deep, resonant, and brassy--sang this song with such vulnerability and tenderness that I don't think Buckley's version can touch it.
Also recommended: Nina Simone Sings the Blues.