"Dark of the Moon" by Howard Richardson and William Berney uses its own version of the song to establish the romance between John the Witch Boy and the human Barbara Allen. (The play invents an entire backwoods folklore about witches, too.)

I played Barbara's little brother Floyd way back in 1965.

The play was made into an opera, "Conjure Moon," by the Lloyd brothers, D. Thomas and Timothy, in the 1980s.