John R. Cash was an American singer, songwriter, musician, and actor. Much of Cash's music contained themes of sorrow, moral tribulation, and redemption, especially in the later stages of his career. He was known for his deep, calm bass-baritone voice, the distinctive sound of his Tennessee Three backing band characterized by train-like chugging guitar rhythms, a rebelliousness coupled with an increasingly somber and humble demeanor, free prison concerts, and a trademark all-black stage wardrobe which earned him the nickname "The Man in Black".Born to poor cotton farmers in Kingsland, Arkansas, Cash rose to fame in the burgeoning rockabilly scene in Memphis, Tennessee, after four years in the Air Force. He traditionally began his concerts by simply introducing himself, "Hello, I'm Johnny Cash," followed by "Folsom Prison Blues", one of his signature songs. Alongside "Folsom Prison Blues", his other signature songs include "I Walk the Line", "Ring of Fire", "Get Rhythm", and "Man in Black".