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''Sirius'': eight-channel electronic music and trumpet, soprano, bass clarinet, and bass is a music-theatre composition by Karlheinz Stockhausen, composed between 1975 and 1977. It is Nr. 43 in the composer's catalogue of works, and lasts 96 minutes in performance. ==History== ''Sirius'' has been described as "a modern mystery play, clothed as a science fiction story" . While not described by the composer as an opera, it is nevertheless a musical drama, in which four emissaries from a planet orbiting the star Sirius bring a message to earth. "This was to be the big leap into theatre proper. . . . ''Sirius'' is the key work that leads to his magnum opus LICHT (LIGHT)" . When Stockhausen's daughter, Julika (aged 5 or 6 at the time), asked for a dog, he obtained one for her and named it Sirius, after the star in the constellation Canis Major, which was in his mind because he had just finished composing ''Sternklang'' ("Star-sound", 1971). Shortly afterward, he chanced upon a passage in a book by Jakob Lorber describing Sirius as the sun at the center of our universe, and this fired his imagination: Other snippets of vitally important information then came to me through a couple of revelatory dreams. Crazy dreams, from which it emerged that not only did I come from Sirius itself, but that, in fact, I completed my musical education there. Stockhausen never explained these dreams in detail , maintaining that "It would lead to misunderstanding and false interpretation" (Stockhausen 1989, 18). In the composer’s imagination, for beings from the planets of the Sirius system, "everything is music, or the art of co-ordination and harmony of vibrations. . . . The art is very highly developed there, and every composition on Sirius is related to the rhythms of nature . . . the seasons, the rhythms of the stars." Stockhausen’s composition therefore is based on "the cycles and rhythms of nature—of the seasons—with all of their characteristics, and to the planets, animals, and to the twelve main characters of human beings" . ''Sirius'' was commissioned by the West German government to celebrate the United States bicentenary, and is dedicated to the "American pioneers on earth and in space". Composition was begun in 1975, and the first performance was given before an invited audience at the opening of the Albert Einstein Spacearium in Washington, D.C., on 15 July 1976, though only the "summer" section had been completed by then. The "autumn" portion was added in time for performances later that year in Japan, France, Germany, and Italy. After interrupting work in order to compose the second part of his choral opera ''Atmen gibt das Leben'' and the orchestral ''Jubiläum'', Stockhausen finished ''Sirius'' and the première of the complete form took place on 8 August 1977 at the Aix-en-Provence Festival . 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Sirius (Stockhausen)」の詳細全文を読む スポンサード リンク
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