Coming back to Bessie Smith, here she is singing "Gimme a Pigfoot and a Bottle of Beer," that classic number:
https://www.youtube.com/watch?v=hbQEapPrjGM
I prefer her voice to Ma Rainey's but both are great, and the recent film
Ma Rainey's Black Bottom, starring the magnificent Viola Davis, is well worth the watching.
Cheers,
John