Johnny Cash - I | Walk The Line (1972)

In 1972, Johnny Cash continued to showcase his iconic 1956 hit "I Walk the Line" through international performances, including a German TV appearance and a live recording from Österåker Prison. The song, which was written in only 20 minutes as a pledge of loyalty to his first wife, solidified its status as one of the greatest country songs of all time, as well as inspiring the title of the 2005 biopic.