Koko Taylor (born Cora Anna Walton, September 28, 1928 – June 3, 2009) was an American singer whose style encompassed Chicago blues, electric blues, rhythm and blues and soul blues. Sometimes called "The Queen of the Blues", she was known for her rough, powerful vocals. Over the course of her career, she was nominated for 11 Grammy Awards, winning 1985's Best Traditional Blues Album for her appearance on Blues Explosion.

Source: Wikipedia (https://en.wikipedia.org/wiki/Koko_Taylor)