Vernon Dalhart came to country music from outside the tradition, becoming a national star in the years just before more indigenous kinds of country music found their place in the machinery of the music industry. A 1924 recording by Dalhart became country music's first million-selling record; pairing a train song ("Wreck of the Old 97") with a sentimental ballad ("The Prisoner's Song"), the release set patterns for two key genres of early country music on record. Dalhart was born Marion Try Slaughter in Jefferson, TX; the stage name Vernon Dalhart, like Conway Twitty, was a com...