J.R. Cash was an American singer- songwriter, actor, and author, who has been called one of the most influential musicians of the 20th century.
Johnny Cash was known for his deep, distinctive bass-baritone voice, for the "boom-chicka-boom" freight train 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."