John R. `` Johnny '' Cash ( February 26 , 1932 - September 12 , 2003 ) was a singer-songwriter , actor , and author , widely considered one of the most influential American musicians of the 20th century .
Johnny Cash ( born John R. Cash , February 26 , 1932 - September 12 , 2003 ) was a Grammy Award-winning American musician , actor and author .