In Nina Simone's version of "My Baby Just Cares For Me" she plays a beautiful piano solo, which I heard was a variation on a piece by Johann Sebastian Bach. The solo indeed sounds like a variation on something that Bach could have wrote, but I don't know if it's actually a Bach piece or just a "Bach-like" piece.
So, can anyone tell me if the solo really is based on a piece by Bach, and if so which piece?