A prison farm is a large correctional facility where penal labor convicts are put to economical use in a 'farm' (in the wide sense of a productive unit), usually for manual labour, largely in open air, such as in agriculture, logging, quarrying, etc. Its historical equivalent on a very large scale was called a penal colony.

The agricultural goods produced by prison farms are generally used primarily to feed the prisoners themselves and other wards of the state (residents of orphanages, asylums, etc.), and secondarily, to be sold for whatever profit the state may be able to obtain.

In addition to being forced to labor directly for the government on a prison farm or in a penal colony, inmates may be forced to do farm work for private enterprises by being farmed out through the practice of convict leasing to work on private agricultural lands or related industries (fishing, lumbering, etc.). The party purchasing their labor from the government generally does so at a steep discount from the cost of free labor.

Magic Slim (born Morris Holt, August 7, 1937, Grenada, Mississippi) is an American blues singer and guitarist.

Magic Slim was forced to give up playing the piano when he lost his little finger in a cotton gin mishap. He moved first to nearby Grenada. He first came to Chicago in 1955 with his friend and mentor Magic Sam. The elder Magic (Sam) let the younger Magic (Slim) play bass with his band, and gave him his nickname.

At first Slim was not rated very highly by his peers. He returned to Mississippi to work and got his younger brother Nick interested in playing bass. By 1965 he was back in Chicago and in 1970 Nick joined him in his group, the Teardrops. They played in the dim, smoke-filled juke joints popular in Chicago in the 1970s on bandstands barely large enough to hold the band.

Slim's recording career began in 1966, with the song "Scufflin'", followed by a number of singles into the mid 1970s. He recorded his first album in 1977, Born Under A Bad Sign, for the French MCM label. During the 1980s, Slim released titles on Alligator, Rooster Blues and Wolf Records and won his first W.C. Handy Award. In 1980 he recorded his cover version of "Mustang Sally".

Tommy Bankhead (October 24, 1931 – December 16, 2000) was an American Delta blues guitarist and singer, who backed musicians such as Howlin' Wolf, Sonny Boy Williamson I, Elmore James (his cousin),Joe Willie Wilkins, Robert Nighthawk, and Joe Hill Louis.

Born in Lake Cormorant, Mississippi, United States, Bankhead later moved to St. Louis, Missouri and made it his home. He also performed sometimes on bass guitar and harmonica, and released a few albums under his own name. In his later years he toured as Tommy Bankhead and the Blues Eldoradoes. Bankhead was a fixture in St. Louis blues for over fifty years.

He died in St. Louis in December 2000, from respiratory failure due to emphysema.

Sam John Hopkins (March 15, 1912 – January 30, 1982) better known as Lightnin’ Hopkins, was an American country blues singer, songwriter, guitarist and occasional pianist, from Houston, Texas. Rolling Stone magazine included Hopkins at number 71 on their list of the 100 greatest guitarists of all time.

Robert "Mack" McCormick stated, "Hopkins is the embodiment of the jazz-and-poetry spirit, representing its ancient form in the single creator whose words and music are one act".

Born Sam John Hopkins in Centerville, Texas, Hopkins' childhood was immersed in the sounds of the blues and he developed a deeper appreciation at the age of 8 when he met Blind Lemon Jefferson at a church picnic in Buffalo, Texas. That day, Hopkins felt the blues was "in him" and went on to learn from his older (somewhat distant) cousin, country blues singer Alger "Texas" Alexander. Hopkins had another cousin, the Texas electric blues guitarist, Frankie Lee Sims, with whom he later recorded. Hopkins began accompanying Blind Lemon Jefferson on guitar in informal church gatherings. Jefferson supposedly never let anyone play with him except for young Hopkins, who learned much from and was influenced greatly by Blind Lemon Jefferson thanks to these gatherings. In the mid 1930s, Hopkins was sent to Houston County Prison Farm for an unknown offense. In the late 1930s Hopkins moved to Houston with Alexander in an unsuccessful attempt to break into the music scene there. By the early 1940s he was back in Centerville working as a farm hand.

John R. "Johnny" Cash (February 26, 1932 – September 12, 2003), was an American singer-songwriter, actor, and author, who has been called one of the most influential musicians of the 20th century. Although he is primarily remembered as a country music icon, his songs and sound spanned many other genres including rockabilly and rock and roll—especially early in his career—as well as blues, folk, and gospel. This crossover appeal led to Cash being inducted in the Country Music Hall of Fame, the Rock and Roll Hall of Fame, and Gospel Music Hall of Fame.

Cash was known for his deep, distinctive bass-baritone voice; for the "boom-chicka-boom" sound of his Tennessee Three backing band; for his rebelliousness, coupled with an increasingly somber and humble demeanor; for providing free concerts inside prison walls; and for his dark performance clothing, which earned him the nickname "The Man in Black". He traditionally started his concerts by saying, "Hello, I'm Johnny Cash." and usually following it up with his standard "Folsom Prison Blues".