There's a Christmas ballad I like to sing this time of year that comes from the High Line country of Montana in 1929 — “A Christmas Pageant with a Practical Result,” it’s called, and it was written by a character named Henry Everett (he went by H. E.) Prall. I call him a “character” because I have discovered that prairie balladeers — the writers of storytelling poems and songs during the settlement era and for a generation after — were, well, characters. They were folk artists with a performative impulse.