"I Walk the Line" is most famously a 1956 hit song by , written as a personal vow of marital fidelity to his first wife, Vivian Liberto . Cash described the lyrics as a "prodding" to himself to "play it straight" while facing the temptations of fame on the road. The phrase "walk the line" itself was suggested by fellow country artist Carl Perkins to represent staying on the straight and narrow path. The Song: Origins and Innovation
: Cash developed the song's unique chord progression after accidentally hearing guitar tapes playing backward while stationed in Germany with the Air Force. Walk the Line
: The iconic "boom-chicka-boom" rhythm was enhanced by Cash placing a piece of paper (or sometimes a dollar bill) under his guitar strings to simulate a snare drum, which he lacked during the session. "I Walk the Line" is most famously a
