Johnny Cash, otherwise known as “The Man in Black” was one of the most influential artists in his time, which is why we all know him to this day. When you would hear his voice, you knew exactly who he was. The song “I Walk The Line” was written and recorded in 1956. This song became extremely well known, selling over two million copies. The hit song made its way to #1 on the Billboard charts and later became ranked 17th on US pop charts.His motivation while writing this song was considered a “pledge of devotion”since he was newly married. As Cash’s recording became known to the world, other artists became intrigued and decided to do a cover of the song. Some of those artists included Everly Brothers, Dean Martin, Burl Ives, Dolly Parton, and a Hoagy Carmichael version. It was clear that this recording by Johnny Cash influenced a lot of people, especially the artists that I named above, who all decided to do their own covers of the hit song because they were interested and able to relate to it!
https://www.allmusic.com/artist/johnny-cash-mn0000816890/biography