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Spiral (Spiral [adj.], Spirally), for a soloist with a shortwave receiver, is a composition by Karlheinz Stockhausen, written in 1968. It is Number 27 in the catalogue of the composer's works.
Contents
Conception
Spiral is one of a series of works dating from the 1960s which Stockhausen designated as "process" compositions. These works in effect separate the "form" from the "content" by presenting the performers with a series of transformation signs which are to be applied to material that may vary considerably from one performance to the next. In Spiral and three companion works (Kurzwellen for six performers, Pole for two, and Expo for three), this material is to be drawn spontaneously during the performance from short-wave radio broadcasts (Kohl 1981, 192–93). The processes, indicated primarily by plus, minus, and equal signs, constitute the composition and, despite the unpredictability of the materials, these processes can be heard from one performance to another as being "the same" (Kohl 2010, 137).
History
Spiral was composed in Madison, Connecticut in September 1968 and was premiered on 15 May 1969 at the Muzički Biennale Zagreb, with the oboist Heinz Holliger as the soloist (Stockhausen 1971, 140). Holliger performed it subsequently in Saint-Paul de Vence (Vetter 2000, 103), and on 10 July 1969 at the Cheltenham Music Festival (Sadie 1969). Between 14 March and 14 September 1970, Spiral was given 1300 times at Expo '70 in Osaka, Japan, in daily performances by twenty different musicians including the composer. The score is dedicated to the other nineteen: the six singers of the Collegium Vocale Köln (Dagmar Apel, Gaby Rodens, Helga Albrecht, Wolfgang Fromme, Siegfried Bernhöft, and Hans Alderich Billig), and instrumentalists David C. Johnson (flute with synthesizer), Michael Vetter (electric recorder), Edward Tarr (trumpet), Karlheinz Böttner (electric guitar), Christoph Caskel and Michael Ranta (percussion), Rolf Gehlhaar (tamtam), Harald Bojé (electronium and piano), Peter Eötvös (55-chord and piano), Gérard Frémy and Aloys Kontarsky (piano), Johannes Fritsch (electric viola), and Mesías Maiguashca (sound direction) (Stockhausen 1971, 140).
Structure and technique
Spiral consists of a sequence of 206 events, grouped into ten sections which are divided in the score by wavy barlines. Stockhausen explained that in pieces like this, "the first step is always that of imitating something and the next step is that of transforming what you're able to imitate" (Cott 1973, 33). The first event is realized with the short-wave receiver and the instrument/voice together. The subsequent events freely alternate performance by the radio, by the instrument or voice, and their combination, though a balance should be aimed for between events with and without radio sounds (Stockhausen 1973, 1, 11, 21).
Each plus, minus, or equal sign indicates that, upon repetition of an event, the performer is to increase, decrease, or maintain the same level in one of four musical dimensions (or "parameters"): overall duration of the event, number of internal subdivisions, dynamic level, or pitch register/range. It is up to the performer to decide which of these dimensions is to be affected, except that vertically stacked signs must be applied to different parameters (Stockhausen 1973, 1, 11, 21). Despite this indeterminacy, a large number of plus signs (for example) will result in successive events becoming longer, more finely subdivided, louder, and either higher or wider in range; a large number of minus signs will produce the reverse effect (Kohl 2010, 137). To the signs previously used in Prozession and Kurzwellen, Stockhausen adds a dozen new ones. An especially important one is the "spiral sign", consisting of a column of different combinations of four or five plus or minus signs bracketed by repeat marks. At this sign, the performer is to repeat the previous event several times, transposing it each time in all parameters, and attempt to transcend not only previous limits reached in the piece, but also to go beyond the limitations of the instrument/voice itself. In doing this, the performer is encouraged to employ visual and theatrical possibilities (Stockhausen 1973, 3–4, 13–14, 23–24). Because there are only seven "spiral" signs altogether, not every section contains one of them (Vetter 2000, 103). Spiral is not ordinarily performed complete: the performer may end a version at any of the wavy barlines, and then for the next performance should resume where the previous one left off. On the other hand, the end of the score is marked "da capo" so that, should a chosen starting point result in the end being reached too soon, the performer may continue again from the beginning. Most performances last between fifteen and twenty-five minutes, and Stockhausen did not authorise a full-length version until Michael Vetter convinced him to permit such a thing (Vetter 2000, 103–104). The first complete performance was realised by Michael Vetter and was recorded on 22 November 1995 at the Ballhorn Tonstudio in Odenthal (Stockhausen and Vetter 1996, 17 and 75).