Ask any country music fan who is the best-known country singer ever and they will probably tell you, Johnny Cash. He didn't sell the most records, but he sold a lot of them. He didn't write the mos big hits, but he did write quite a few. He was just popular. A man of the common people. Southern bred. Picked cotton. Was in the military service. Started with Sun Records in Memphis along with Jerry Lee Lewis, Carl Perkins, and Elvis Presley. He married...