 He returned to Greenville, where he was selected by an out-of-town producer to act in an opera at the King Opera House.This experience convinced John that he preferred music and the stage to the preference of his parents, who wanted him to pursue a medical degree.While en route to a career as actor and singer, Boles earned a living by teaching French and singing in a high school in New York state and working as business manager and interpreter for a one-year tour of Europe by a student group.