The Immortal Hour The Immortal Hour The Immortal Hour is an opera by English composer Rutland Boughton. Boughton adapted his own libretto from the play of the same name by Fiona MacLeod, a pseudonym of writer William Sharp. "The Immortal Hour" is a fairy tale or fairy opera, with a mood and theme similar to Dvořák's "Rusalka" and Mozart's "The Magic Flute". Magic and nature spirits play important roles in the storyline. The fairy people are not mischievous, childlike sprites, but are proud and powerful: immortal demigods who are feared by mortals and who can (and do) interfere with the lives of men
The Magic Flute (at right), which does not give full names; "Hr." = Herr, Mr.; "Mme." = Madame, Mrs.; "Mlle." = Mademoiselle, Miss. While the female roles in the opera are assigned to different voice types, the playbill for the premiere performance referred to all of the female singers as "sopranos". The casting of the roles relies on the actual vocal range of the part. The work is scored for two flutes (one doubling on piccolo), two oboes, two clarinets (doubling basset horns), two bassoons, two horns, two trumpets, three trombones (alto, tenor, and bass), timpani and strings. It also requires a four-part