Top 5 Johnny Cash and June Carter Cash Duets Johnny Cash and June Carter Cash weren't just one of the most iconic country music power couples of all time -- they were one of the most iconic couples of all time, period. Say only their first names and everyone knows who you're talking about; they're even the subjects of a love song that isn't one of theirs! Some of Cash and Carter Cash's enduring legacy has to do with how much the two loved each other, yes. But their legend is buoyed by how good they sounded when they sang together. Something special happened when they took to the studio or the stage together.