Johnny Cash and Waylon Jennings were prominent figures in the country music genre, known for their innovative "outlaw" style that deviated from the polished sound of Nashville's mainstream country music in the 1960s and 70s. Johnny Cash, with his deep, resonant baritone voice, was known for his songs about love, faith, and the struggles of working-class Americans, while Waylon Jennings' signature sound was characterized by his rough-edged vocal style and use of the "walking" bassline. Both artists had a significant impact on the music industry, with classic hits like Cash's "I Walk the Line" and Jennings' "Luckenbach, Texas," and they continue to influence contemporary country music artists.