Robert Leroy Johnson (May 8, 1911–August 16, 1938) was an American blues musician, among the most famous of Delta blues musicians. His landmark recordings from 1936–1937 display a remarkable combination of singing, guitar skills, and songwriting talent that have influenced generations of musicians. Johnson's shadowy, poorly documented life and death at age 27 have given rise to much legend.

According to a legend known to modern blues fans, Robert Johnson was a young black man living on a plantation in rural Mississippi. Branded with a burning desire to become a great blues musician, he was instructed to take his guitar to a crossroad near Dockery Plantation at midnight. There he was met by a large black man (the Devil) who took the guitar and tuned it. After tuning the guitar, the Devil played a few songs and then returned it to Johnson, giving him mastery of the guitar. This was, in effect, a deal with the Devil; in exchange Robert Johnson was able to create the blues for which he became famous.

Chester Arthur Burnett (June 10, 1910 – January 10, 1976), better known as Howlin' Wolf, was an influential American blues singer, guitarist and harmonica player.

With a booming voice and looming physical presence, Burnett is commonly ranked among the leading performers in electric blues; musician and critic Cub Koda declared, "no one could match [Howlin' Wolf] for the singular ability to rock the house down to the foundation while simultaneously scaring its patrons out of its wits." Many songs popularized by Burnett—such as "Smokestack Lightnin'," "Back Door Man" and "Spoonful"—have become standards of blues and blues rock.

At 6 feet, 6 inches (198 cm) and close to 300 pounds (136 kg), he was an imposing presence with one of the loudest and most memorable voices of all the "classic" 1950s Chicago blues singers. Howlin' Wolf's voice has been compared to "the sound of heavy machinery operating on a gravel road". Although the two were reportedly not that different in actual personality, this rough edged, slightly fearsome musical style is often contrasted with the less crude but still powerful presentation of his contemporary and professional rival, Muddy Waters, to describe the two pillars of the Chicago Blues representing the music.

Huddie William Ledbetter (January 1888 – December 6, 1949) was an iconic American folk and blues musician, notable for his strong vocals, his virtuosity on the 12-string guitar, and the songbook of folk standards he introduced.

He is best known as Leadbelly or Lead Belly. Though many releases list him as "Leadbelly," he himself spelled it "Lead Belly." This is also the usage on his tombstone, as well as of the Lead Belly Foundation.

Although he most commonly played the twelve string, he could also play the piano, mandolin, harmonica, violin, concertina, and accordion. In some of his recordings, such as in one of his versions of the folk ballad "John Hardy", he performs on the accordion instead of the guitar. In other recordings he just sings while clapping his hands or stomping his foot. The topics of Lead Belly's music covered a wide range of subjects, including gospel songs; blues songs about women, liquor and racism; and folk songs about cowboys, prison, work, sailors, cattle herding and dancing. He also wrote songs concerning the newsmakers of the day, such as President Franklin Roosevelt, Adolf Hitler, Jean Harlow, the Scottsboro Boys, and Howard Hughes.