This week on A Prairie Home Companion, one last compilation show before the start of the new season. A choir show with the University of Minnesota Concert Choir, and not one but three male choirs: Cantus, Chanticleer and the Fostbraedur Male Choir from Iceland. Bill Holm recites his Choir story, Philip Brunelle appears in an episode of Guy Noir, tenor Raul Melo sings "Nessun Dorma" with VocalEssence and the St. Olaf Choir has the "Choral Blues." In Lake Wobegon, the choir celebrates Mozart's birthday.