John R. Cash (born J. R. Cash; February 26, 1932 – September 12, 2003) was an American country singer-songwriter. Most of Cash's music contained themes of sorrow, moral tribulation, and redemption, especially in the later stages of his career.[4][5] He was known for his deep, calm bass-baritone voice,[a][6] the distinctive sound of his Tennessee Three backing band characterized by train-like chugging guitar rhythms, a rebelliousness[7][8] coupled with an increasingly somber and humble demeanor,[4] free prison concerts,[9] and a trademark all-black stage wardrobe, which earned him the nickname the "Man in Black".

Cash is one of the best-selling music artists of all time, having sold more than 90 million records worldwide.