Editor's note: He gave concerts at prisons, inspiring an incarcerated Merle Haggard to pursue music after serving his time. He brought a bad-boy ethos to country music, elevating it from hillbilly twang to Cash cool. He advocated for Native Americans like no other star of his time. And he made it cool to wear black, a trend that continues to this day. His music is still relevant and awesome, so take a spin through this sweet collection and bring some Johnny Cash wallpapers to your screens today!