The project not only reunited Washington and Foxx, who appeared together in the Ray Charles bio-pic "Ray, " but it also gave the actress an opportunity to delve into a role that she said was challenging artistically and emotionally taxing.

CNN: Kerry Washington talks Olivia Pope, slavery and politics

Some cowboy booted Oakey Swing Bands and a young Ray Charles - still doing his best Charles Brown cocktail jazz impersonation - recorded it.

NPR: Blues Song Is a Decades-Long Music Lesson

Apart from the Simpson masterpiece, Louisiana recently has hosted the filming of Oscar-winning biopic Ray (about Ray Charles) and the thriller Skeleton Key.

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