“Mysterious Encounters”: Three sing-songy poems are featured on today’s episode.  All three depict encounters between two individuals: all three resist our efforts to make total sense of their motives and actions.  We may think we know what happens between the couples, but the poems seem to run ahead of our ability to catch up to them and make complete sense of them.  Robert Burns, “Coming Through the Rye.”  John Keats, “La Belle Dame sans Merci: A Ballad.”  Padraic Colum: “She Moved Through the Fair.”  The show’s theme music is Philip Aaberg’s “Going-to-the Sun,” from his CD Live from Montana, available at sweetgrassmusic.com and used with Mr. Aaberg’s...