Unsichtbare Chöre

Unsichtbare Chöre (Invisible Choirs) is an eight-channel electronic-music composition by Karlheinz Stockhausen. A component part of the opera Donnerstag aus Licht, it may also be performed as an independent composition, in which form it is designated "ex 49" in the composer's catalog of works (where Nr. 49 is Michaels Jugend, act 1 of the opera).

Function in Donnerstag

The opera Donnerstag aus Licht concerns the development of the earthly life of young Michael. He personifies a divine spirit capable of achieving immortality and absolute knowledge, who discovers beyond death a supraconsciousness that protects him from the anti-knowledge of Lucifer. The Invisible Choirs represent the divine immanence, disembodied and beyond logic, activated like a mantra that forces Michael into transcendence.[1] It is played back on tape over eight groups of loudspeakers, set in a circle around the audience. It sounds softly in the background throughout the first scene, "Childhood", of act 1 (Michael's Youth), and rather louder during "Festival", the opening scene of act 3 (Michael's Homecoming).

Text

The work sets three texts in Hebrew ("Judgement Day" from The Ascent of Moses, "The End of Time" from the Apocalypse of Baruch, and a Hymn of Praise, "The Heavens Rejoice", from the Book of Leviticus), and a different passage from "The End of Time", sung in German.[2] deliberately selecting the "positive, creative, and invigorating" passages[3] and avoiding the "gruesome" segments that "describe drastic things, that speak of blood and destruction".[4]

Materials and technique

A click track was recorded on the sixteenth track of a sixteen-track tape recorder. This was used to synchronise the choir, who were recorded separately by sections, with each voice group (sopranos, altos, tenors, and basses) superimposed on itself as many as four times. From this fifteen-track version, Stockhausen then mixed down an eight-track version, in the process changing the positions of the choir groups in space. The result could never be performed by a choir live, with as many as 180 separate vocal parts synchronised at some points.[5]

Discography
  • Stockhausen: Unsichtbare Chöre / Invisible Choirs / Chœurs invisibles. WDR Rundfunkchor Köln, Herbert Schernus, Gottfried Ritter, and Karlheinz Stockhausen (preparation); Suzanne Stephens (clarinets); Karlheinz Stockhausen (musical direction and sound projection). Deutsche Grammophon LP 419-432-1; CD 419 432-2. Hamburg: Polydor International, 1986. Reissued Stockhausen Complete Edition CD 31. Kürten: Stockhausen-Verlag, 1992. Excerpt reissued on Schöpfung und Erschöpfung. Musik in Deutschland 1950–2000: Musiktheater: Porträt. BMG Classics RCA Red Seal CD 74321 73635 2. [Germany]: BMG Ariola Classics; Deutscher Musikrat; [N.p.]: RCA Red Seal, 2003.

References
  1. Bruno 1999, 134–135.
  2. Stockhausen 1989a, 206–207.
  3. Stoianova 1999b, 196.
  4. Stockhausen 1989b, 162.
  5. Stockhausen 1994, 76–77.

Cited sources
  • Bruno, Pascal. 1999. "Donnerstag aus Licht: A New Myth, or Simply an Updating of a Knowledge?" Perspectives of New Music 37, no. 1 (Winter): 133–156.
  • Stockhausen, Karlheinz. 1989a. "Unsichtbare Chöre". In his Texte zur Musik 5, edited by Christoph von Blumröder, 204–237. DuMont Dokumente. Cologne: DuMont Buchverlag. ISBN 3-7701-2249-6.
  • Stockhausen, Karlheinz. 1989b. "Die sieben Tage der Woche", in his Texte zur Musik 6, edited by Christoph von Blumröder, 152–171. DuMont Dokumente. Cologne: DuMont Buchverlag. ISBN 3-7701-2249-6.
  • Stockhausen, Karlheinz. 1994. "Electroacoustic Performance Practice", translated by Jerome Kohl. Perspectives of New Music 34, no. 1 (Summer): 74–105. Original German text, as "Elektroakustische Aufführungspraxis". In Stockhausen's Texte zur Musik 8, edited by Christoph von Blumröder, 549–585. Kürten: Stockhausen-Verlag, 1998. ISBN 3-00-002131-0.
  • Stoianova, Ivanka. 1999a. "Und das Dasein wird Musik—Einige Blicke über LICHT: Karlheinz Stockhausen zum 70. Geburtstag". In Internationales Stockhausen-Symposion 1998: Musikwissenschaftliches Institut der Universität zu Köln 11. bis 14. November 1998: Tagungsbericht, edited by Imke Misch and Christoph von Blumröder, 265–285. Signale aus Köln 4. Saarbrücken: Pfau-Verlag. 3-89727-050-1.
  • Stoianova, Ivanka. 1999b. "And Dasein Becomes Music: Some Glimpses of Light", translated by Jerome Kohl. Perspectives of New Music 37, no. 1 (Winter): 179–212. [A somewhat different version of the text published in German as Stoianova 1999a]

Further reading
  • Maconie, Robin. 2005. Other Planets: The Music of Karlheinz Stockhausen. Lanham, Maryland, Toronto, Oxford: Scarecrow Press. ISBN 0-8108-5356-6.
  • Prosnjakov, Michael. 1999. "Vokale Entwicklungstendenzen in LICHT". In Internationales Stockhausen-Symposion 1998: Musikwissenschaftliches Institut der Universität zu Köln 11. bis 14. November 1998: Tagungsbericht, edited by Imke Misch and Christoph von Blumröder, 216–224. Signale aus Köln 4. Saarbrücken: Pfau-Verlag. 3-89727-050-1.
  • Stockhausen, Karlheinz. 1998. "Elektronische Musik seit 1952". In his Texte zur Musik 8, edited by Christoph von Blumröder, 399–504. Kürten: Stockhausen-Verlag. ISBN 3-00-002131-0.
  • Toop, Richard (2002). "Donnerstag aus Licht ('Thursday from Light')". Grove Music Online. doi:10.1093/gmo/9781561592630.article.O006067.
  • Ulrich, Thomas. 2017. Stockhausens Zyklus LICHT: Ein Opernführer. Cologne, Weimar, and Vienna: Böhlau Verlag. ISBN 978-3-412-50577-6.
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