William James Dixon was an American blues musician, vocalist, songwriter, arranger and record producer. He was proficient in playing both the upright bass and the guitar, and sang with a distinctive voice, but he is perhaps best known as one of the most prolific songwriters of his time. Next to Muddy Waters, Dixon is recognized as the most influential person in shaping the post–World War II sound of the Chicago blues.

McKinley Morganfield, known professionally as Muddy Waters, was an American blues singer and musician who was an important figure in the post-World War II blues scene, and is often cited as the "father of modern Chicago blues". His style of playing has been described as "raining down Delta beatitude".