Studio for Electronic Music (WDR)

Karlheinz Stockhausen in the WDR Electronic Music Studio in 1991

The Studio for Electronic Music of the West German Radio (German: Studio für elektronische Musik des Westdeutschen Rundfunks) was a facility of the Westdeutscher Rundfunk (WDR) in Cologne. It was the first of its kind in the world, and its history reflects the development of electronic music in the second half of the twentieth century.

## Founding

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On 18 October 1951 a meeting was held at the then Nordwestdeutscher Rundfunk in connection with a tape-recorded late-night programme about electronic music broadcast on the evening of the same day. Informed via a report on this meeting, the Intendant (General Manager) of the radio station, Hanns Hartmann, gave the green light for establishment of the studio. In this way, this date may be regarded as the founding day of the Studio für elektronische Musik.[1]

Participants in the meeting, amongst others, were Werner Meyer-Eppler, Robert Beyer [de], Fritz Enkel and Herbert Eimert.[2] Robert Beyer had been speaking of timbre-oriented music since as early as the 1920s. He thought the time was ripe to bring this idea to fruition. Fritz Enkel was the technician who conceptualized the first establishment of the studio. Herbert Eimert was a composer, musicologist, and journalist. In the 1920s he had published a book on the theory of atonal music, which had gotten him expelled from Franz Bölsche [de]'s composition class at the Hochschule für Musik und Tanz Köln.[3] Ever since his youth, he had stood on the side of radical musical progress and organized concerts with noise instruments. Eimert was the first director of the Studio für elektronische Musik. Werner Meyer-Eppler was a docent (lecturer) at the Institute for Phonetics and Communication Research of Bonn University. He had first employed the term electronic music in 1949, in the subtitle of one of his books, Elektrische Klangerzeugung. Elektronische Musik und synthetische Sprache. After the inventory he made in this book of electronic musical instruments developed up to that point in time, Meyer-Eppler experimentally developed in his Bonn Institute one of the basic processes of electronic music, namely the compositional creation of music directly on magnetic tape.

At the end of the above-mentioned report the availability of the men Trautwein (Düsseldorf) and Meyer-Eppler (Bonn) was pointed out. Cologne lies between Düsseldorf and Bonn. In the early 1930s Friedrich Trautwein had developed the Trautonium, one of the earliest electronic musical instruments. A version of the Trautonium, called the Monochord, was created for the studio. Meyer-Eppler carried out his experiments in Bonn with a Melochord. Harald Bode had constructed this instrument and modified it according to Meyer-Eppler's wishes. A Melochord was therefore also purchased for the Cologne studio. The Monochord and, especially, the Melochord can be understood as precursors to or an early form of the synthesizer. Synthesizers played an important role in the subsequent history of the studio.

## Beginnings

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WDR Broadcasting Centre, Wallrafplatz, Cologne: home of the studio from 1952 to 1986

When the viability of the project was still in doubt, a demonstration piece was urgently needed to show what might be done. It was believed at the time that securing the means for the music department to set up a studio depended on having a piece to broadcast as soon as possible. Eimert and Beyer were not yet in a position to produce an actual example of music, and so the studio technician Heinz Schütz assembled what is officially documented in the records of NWDR Cologne as the first production of the studio (even though the studio did not yet actually exist). It was titled Morgenröte (The Red of Dawn) signifying "the beginning". Schütz has never considered himself to be a composer, and regards the attribution to him of this "piece", which "was produced with very primitive means, which is all that was available to us in those days", as "purely an accident".[4]

Initially, the Monochord and Melochord were used in the Cologne Studio together with other equipment. A noise generator provided a rushing-noise signal, like what is heard for example in short-wave radio on frequencies between radio stations. Filters were important for transforming sounds. An octave filter attenuates an input signal (like white noise, for example) into several octave-wide frequency bands. Two band-pass filters allow only a single band of frequencies to pass through from an input signal. By using the band-pass filters instead of the octave filter, this band could be adjusted in width and centre frequency. In addition there was a so-called ring modulator, which mixed two input signals multiplicatively, in contrast to the additive mixing done with a mixing console. The ring modulator was used for intense sound transformations. An oscilloscope made sounds visible. A four-track tape recorder allowed the synchronisation of several separately produced successions of sounds. Two single-track tape recorders were used to copy one tape to another. By using the mixer, new sounds could be recorded along with those from the first audio tape while copying to the second tape recorder (one of Meyer-Eppler's key ideas). The mixer consisted of two groups of eight channels each. It had remote controls for the four-track tape recorder and the octave filter. In addition, the inputs and outputs of all sound sources, filters, and modulators converged here, in a cross-plug-in busbar panel, so that the connections of the individual devices with one another could easily be established and modified as needed.

Because right at the very beginning the Monochord and Melochord were not yet available—but tape recorders probably were—Robert Beyer and Herbert Eimert were restricted to sound materials that Meyer-Eppler had made in Bonn. Meyer-Eppler's tapes were edited and mixed. Although Beyer and Eimert could not really produce original music this way, they nevertheless gained substantial experience in dealing with the procedures developed by Meyer-Eppler. As the studio finally took concrete form, Beyer and Eimert were able to create, both together and separately, some sound studies, following purely auditory criteria. The first public demonstration of these pieces took place in a Neues Musikfest (New Music Festival) presentation on 26 May 1953 in the large broadcasting studio of the Cologne Radio Centre.[5] This event was announced at the time as the official opening and founding of the studio.[6] These studies give a very free impression and betray a certain carelessness in their production. Anyone familiar with the tone colours of analogue synthesisers will be able to hear many familiar tones here. While Beyer seems to have been quite satisfied with the results, the more rigorous Eimert disagreed with this improvisational playing around and assemblage. Eimert wanted to establish real composition in electronic music. This disagreement led to Beyer's resignation from the studio a year later.

When the newly completed NWDR Funkhaus (Broadcasting Centre) was opened in 1952, the Electronic Studio was initially quartered in the anteroom of Production Studio 2 of the chamber-music hall, with additional facilities in Sound Studio 2. Eimert and Beyer produced Klangfiguren II here, and later Stockhausen realised both of his Elektronische Studien (1953–54) and Gesang der Jünglinge (1955–56) there.[7][8]

## Serial music and sine-tone composition

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From this point onward Eimert actively followed the recommendation in the opening of the report by the Intendant mentioned above: "It would only be necessary to make these suitable facilities available to composers commissioned by the radio station." That is, he invited young composers who appeared suitable to him to realize the ideal of composed electronic music in the studio. Since the early 1950s, the most radical European composers had set themselves the goal of totally organizing all aspects of music. They started from the view of twelve-tone technique, but only the pitches were organized (in series of notes). The French composer Olivier Messiaen had the idea in the late 1940s of transferring the organisation of pitches onto durations, dynamics, and, conceptually, even timbres. Messiaen had two students in Paris who took up his thoughts and from then on were the best-known representatives of serial music—as it was called—Pierre Boulez and Karlheinz Stockhausen. In the 1970s Boulez would become the founder and director of one of the most important institutions in this field, IRCAM.

Eimert invited Stockhausen to become his assistant at the Cologne studio, and he arrived in March 1953.[9] In 1952 in Paris, at Pierre Schaeffer's Groupe de Recherches de Musique concrète, Stockhausen had already acquired some experience with various sound and tape editing processes. From this he knew that pitches, durations, and amplitudes could in fact be determined very accurately, but timbre eluded serial organisation. Soon after his arrival, Stockhausen came to regard the Monochord and Melochord (which had been purchased on the recommendation of Meyer-Eppler) as useless for the production of music that was to be organised in all its aspects, especially timbre. He turned to Fritz Enkel, the head of the calibration and testing department, and asked for a sine-wave generator or a beat-frequency oscillator capable of producing sine waves, from which Stockhausen intended to build sound spectra. Enkel was shocked, since the two recently acquired keyboard instruments, which Stockhausen was now telling him were of no use at all, had cost 120,000 Marks. Besides, Enkel told him, "It will never work!" Stockhausen responded, "Maybe you're right, but I want to try it all the same".[10]

## Incorporation of natural sound material

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After composing two works entirely from sine tones—Studie I and Studie II, in 1953 and 1954, respectively—Stockhausen decided to use sound material that could not be created from the devices in the studio, namely speech and song. No doubt he was influenced by Meyer-Eppler, with whom he studied phonetics and communications theory from 1954 until 1956. It was from Meyer-Eppler that Stockhausen learned about aleatory and statistical processes, and became convinced that these were necessary to avoid the sterility toward which totally organised music tends to lead.[11] For his next electronic composition, Gesang der Jünglinge (1955–56), he established connections between the different categories of human speech sounds on the one hand and those of the three main types of sound production in the studio on the other. Vowels (a, e, i, o, u and diphthongs such as ai) corresponded to sine tones and their combinations, plosive consonants (p, k, t) to pulses, and fricative consonants such as f, s, sh, and ch, to rushing noises.[12] Stockhausen on the one hand subjected the recording of a child's voice to the same manipulations as the sounds and noises produced in the studio, and on the other hand tried to approximate the latter in various degrees to the vocal sounds. He wanted to achieve a continuum between electronic and human sounds.[13] In any event, the first step had been taken towards the inclusion of materials other than sounds produced purely by electronic means. Electronic music from the Cologne studio thereby came closer conceptually to the musique concrète from Paris.

## Further developments

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Gottfried Michael Koenig, who assisted Stockhausen and other composers in the studio with the implementation of their pieces, was himself a composer of electronic music and, above all else, the most systematic theorist of electronic music. He did not leave things be, especially with instrumental music, which stubbornly remained in electronic music (in spite of the banishment of the monochord and melochord) now using as its "instruments" the sine-wave generator, noise generator, and pulse generator. Thinking in terms of the parameters of pitch, duration, amplitude, etc. was indeed carried over from instrumental music. The longer experiences were accumulated in the studio, the clearer it became that these terms, were no longer appropriate for complex sonic phenomena, as they emerged with the intensive use of all technical possibilities. This was also reflected in the difficulties that arose in the experiments are the notation of electronic music. If simple sine-tone composition with indication of frequencies, durations, and sound levels could still relatively simply be represented graphically, this was no longer possible for the increasingly complex pieces from the mid-1950s. Koenig wanted to create a music that was "really electronic", that is, imagined from the given technical resources of the studio, and no longer just disguised reminiscences of traditional instrumental performances. He therefore began at zero, so to speak, asking himself: what single devices and what kind of combinations between the processes amongst several devices can there be (simultaneously or, by means of tape storage, successively), and what options are available to control these processes? Practically, the pieces that he realized up to 1964 in the studio represent systematic experiments in the exploration of electronic sonorities. In the process, however, it was clear to him theoretically in 1957—therefore at the time when, in the USA, Max Mathews was making the very first experiments with sound production by a computer—that the technical capabilities of the studio were very limited. If the sine wave was not, so to speak, an indivisible element of sound, it could still be construed, with its characteristics of frequency and strength, as "instrumental". In an essay presenting some of Koenig's conclusions from his work in the studio, he spoke of the individual "amplitudes", which he wanted to determine. A sine tone is already a number of consecutive "amplitudes". Nowadays, the term "sample" refers to what Koenig meant, namely the elongation (distance from the null axis) of a signal to some point in time. Later Koenig developed a computer program that could produce episodes of "amplitudes" without regard to superordinate "instrumental" parameters.[14]

## Modernising of the studio

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When Herbert Eimert retired in 1962, the organisation of the studio was restructured. It was reassigned to the music division of WDR, with the intention of preventing the isolation of the technical from the musical. Eimert was officially succeeded as director of the studio by Karlheinz Stockhausen in 1963, and three years later, at the insistence of Karl O. Koch, head of the WDR Music Department, the directorship was split into two parts: artistic and administrative. Dr. Otto Tomek, who was director of the WDR new-music department, became co-ordinator between the studio and the music division.[15] Together with Gottfried Michael Koenig, Stockhausen carried out an inventory and assessment of the situation of the studio. From the compact studio, established for ready usability by Fritz Enkel a decade earlier, came an assortment of individual devices which for the most part were not intended for use together with each other. In the meantime, important steps towards a better integration of automated facilities had already been made in other studios and research institutions. In the first half of the 1960s the foundations for this integration of different devices were laid in the form of so-called voltage controlled devices in the United States. Many of the devices in the Cologne studio up until the 1960s had to be operated manually (by turning knobs, for example), while voltage control allowed automatic control of amplitude curves. For a period of three years, until mid-May 1966, compositional work in the studio had to be reduced, while it was being moved to new, larger premises. A great deal of money was invested in a new, state-of-the-art instrumentarium. It was officially re-opened on 4 December 1967.[16][17]) Nevertheless, it was not until the early 1970s that the principle of voltage control was established in the studio.

At some point before Eimert's retirement, the studio had been relocated to Sound Studio 11 on the third floor of the Broadcasting Centre. After Stockhausen took over direction of the studio, he managed with some difficulty to obtain better facilities on the fourth floor.[8]

## Shift away from serial principles and further developments

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The pieces that were produced in the studio from the late 1960s onward are characterized by a move away from the strict serial processes of the 1950s, especially as Gottfried Michael Koenig, the last representative of serial music, had left the studio in 1964 in order to take over the position of head of the Institute of Sonology at the Rijksuniversiteit in Utrecht. Younger composers such as Johannes Fritsch, David C. Johnson, and Mesías Maiguashca now developed the possibilities of electronic sound generation and transformation in more playful and unconventional ways. Whether produced electronically and processed, or produced mechanically, recorded by a microphone and then manipulated electronically, no sound was generally excluded from use in electronic music. Stockhausen himself had already laid the foundation in one of his longest electronic works, Hymnen (1966–67), which is based on recordings of national anthems.[18] Recordings of things like animal sounds, crowds, radio stations, construction-site noises, conversations, etc., were also used by other composers. The main constructive principle was the modulation of properties of one sound by the properties of other sounds. For example, the amplitude envelope of a recording could affect any parameter of an electronically generated sound. Mauricio Kagel placed a particular emphasis in his work on complex circuiting of the equipment (including feedback of the outputs of devices into their own inputs) in order to cause the most unpredictable results possible. Johannes Fritsch had an amplifier amplify its own noise and hum and made it to the sound material of a composition. David C. Johnson recorded noises from the Cologne main train station, among other places, and train movements from which to make the music of Telefun, in 1968.[citation needed]

## Automated processing in the 1970s

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An EMS Synthi 100

In 1971 Stockhausen accepted a position as professor at the Cologne Hochschule für Musik und Tanz. Because German civil-service law forbids holding appointments in two different public institutions, Stockhausen officially gave up his position of Artistic Director of the studio, but continued his involvement under a new contract with WDR as "Consultant to the Music Division of the Studio for Electronic Music". This was only a formal, legal distinction, however, and his activities remained essentially unchanged.[19][20]

Activities after 1970 fall into two broad categories. On the one hand, there were extended tours, especially with Stockhausen's compositions such as Kontakte, Hymnen, and his latest work, Sirius (1974–75). On the other, there were developments within the studio itself, which continued to attract many composers, despite beginning to be outpaced by other facilities around the world in terms of automation and ease of use. A major technological advance was made when, in 1973, a Synthi 100 was purchased from the British firm EMS. It was delivered in 1974.[21]

The Synthi 100 used voltage-controlled oscillators and filters driven by three digital sequencers, each with two tracks. This enabled the programming and storing of different voltage-control sequences, which Stockhausen used extensively in the electronic music for Sirius.[22] Other composers who used the Synthi 100 in the Cologne studio at this time included Rolf Gehlhaar in 1975, for his Fünf deutsche Tänze / Five German Dances,[23] John McGuire in 1978, for Pulse Music III,[24][25] and York Höller in 1979–80, for his Mythos for 13 instruments, percussion, and electronic sounds.[26]

## Move to new quarters in the Annostraße

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Lawo PTR mixing console, obtained for the studio in the early 1990s, now in the Ossendorf museum maintained by Volker Müller

After thirty years, the WDR Broadcasting Centre in the Wallrafplatz was due for renovation, which began in gradual stages. This prevented any new productions in the studio after York Höller's Schwarze Halbinseln (Black Peninsulas, for large orchestra with vocal and electronic sounds) in 1982. For several years, the studio's engineering and technical personnel was hired out to external, co-produced projects, such as the 1984 Venice premiere of Luigi Nono's Prometeo, produced in cooperation with the Freiburg Heinrich-Strobel-Stiftung. The Milan premieres of Stockhausen's operas Donnerstag aus Licht and Samstag aus Licht, were also projects that employed technical support from the studio. In 1986 it was finally decided to relocate the Electronic Music Studio to premises on the Annostraße, previously occupied by Television Studio L, and the move was finally accomplished in 1987.[27][28] The new location was far from ideal. Traffic noise could be heard inside the studio, and in the other direction sounds from the studio disturbed people in the surrounding residential apartments, some of which were directly opposite.[29]

Even before the move, Stockhausen was able to produce the electronic music for the "Greeting" and "Farewell" of his opera Montag aus Licht, by temporarily making use of Production 2 in the Broadcasting Centre. After the move to the new facilities, three further productions were carried out before the end of the decade: John McGuire's Vanishing Points (1988), and two works by Michael Obst, Chansons for mezzo-soprano, bass and contrabass clarinets, synthesizer, live-electronics, and tape, and Ende gut for reader and tape (both 1987). In 1990, Stockhausen relinquished his position as Artistic Consultant to the studio, and was succeeded in the post by York Höller who, like Stockhausen before him, simultaneously held a professorship at the Hochschule für Musik und Tanz. Because Höller had worked at IRCAM, he was especially familiar with the latest digital equipment, and one of tasks was to bring the studio out of the analog era by re-equipping it for digital technology.[30]

In 1997, Wolfgang Becker-Carstens retired from his position as director of the WDR new-music department and administrative head of the studio. Shortly afterward, the WDR management decided to sell the Annostraße building. Both events raised questions about the future of electronic music at WDR. Faced with the possible closure, or at best relocation of the studio, York Höller resigned his position as artistic director in 1999. The sound engineer, Volker Müller, who had been employed by the studio since 1970, had in the meanwhile collected the old analog devices (which had been replaced starting in the late 1980s with digital equipment), into a small museum illustrating the historical techniques used in the studio since its beginnings. After the sale of the building, and in the context of celebrations of the fiftieth anniversary of the founding of the studio in 2001, the remaining equipment and the studio archive were moved provisionally to temporary quarters in the Ossendorf district of the Cologne suburb Ehrenfeld.[31] Half a century after its founding, the studio was closed in 2000.[16] In 2017, it was announced that an anonymous patron had purchased Burg Mödrath near Kerpen, the building in which Stockhausen had been born in 1928, and was opening it as an exhibition space for modern art, with the museum of the WDR Studio to be installed on the first floor.[32]

On 18 October 2017, Google commemorated the studio in a Google Doodle.[33][34]

## Discography

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A CD, produced by Konrad Boehmer, offers a survey of 15 the earliest pieces from the 1950s (works by Eimert, Eimert/Beyer, Goeyvaerts, Gredinger, Koenig, Pousseur, Hambraeus, Evangelisti, Ligeti, Klebe, and Brün):

* Acousmatrix: History of Electronic Music VI. Cologne–WDR: Early Electronic Music. BVHaast 9106. Amsterdam: BVHaast, [2004].

## References

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1. ^ Morawska-Büngeler 1988, p. 9.
2. ^ Morawska-Büngeler 1988, pp. 3, 7.
3. ^ Anon. n.d.
4. ^ Schütz, et al. 2002, p. 147.
5. ^ Morawska-Büngeler 1988, p. 11.
6. ^ Stockhausen 1998, pp. 534, 539–541.
7. ^ Morawska-Büngeler 1988, p. 13.
8. ^ a b Stockhausen 1998, p. 407.
9. ^ Kurtz 1992, pp. 56–57.
10. ^ Stockhausen 1998, p. 456.
11. ^ Kurtz 1992, pp. 68–72.
12. ^ Stockhausen 1964, pp. 66–67.
13. ^ Stockhausen 1964, p. 59.
14. ^ Koenig 1991–2002, 3:[page needed].
15. ^ Stockhausen 1998, pp. 403–404.
16. ^ a b Holmes 2012, p. 76.
17. ^ Morawska-Büngeler 1988, p. 19.
18. ^ Kurtz 1992, pp. 152–153.
19. ^ Stockhausen 1998, p. 403.
20. ^ Custodis 2004, pp. 210, 521.
21. ^ Morawska-Büngeler 1988, p. 22.
22. ^ Morawska-Büngeler 1988, p. 52.
23. ^ Morawska-Büngeler 1988, p. 55.
24. ^ McGuire 1983, passim.
25. ^ Morawska-Büngeler 1988, p. 108.
26. ^ Ehlert 1999, §4.1.
27. ^ Custodis 2004, p. 209.
28. ^ Morawska-Büngeler 1988, pp. 23–24, 108, 135, 137.
29. ^ Stockhausen 1998, pp. 407, 409.
30. ^ Custodis 2004, p. 210.
31. ^ Custodis 2004, pp. 225–226.
32. ^ Bos 2017.
33. ^ Google 2017.
34. ^ Parsons 2017.

## Sources

[edit]

* Anon. n.d. "Herbert Eimert, * 8. April 1897 †15. Dezember 1972". Electropolis.de (Accessed 26 April 2014).
* Bos, Christian. 2017. "Zurück in Stockhausens Wiege". Kölner Stadt-Anzeiger (24 July); accessed 13 August 2017).
* Custodis, Michael. 2004. Die soziale Isolation der neuen Musik: Zum Kölner Musikleben nach 1945. Supplement tot the Archiv für Musikwissenschaft 54\. Stuttgart: Franz Steiner Verlag. ISBN 3-515-08375-8.
* Ehlert, Ralf Gerhard. 1999. Die Verwendung elektronischer Klänge in der Musik York Höllers. Master of Music thesis. Cologne: University of Cologne.
* Google Doodles Archive. 2017. "Celebrating the Studio for Electronic Music". Google Doodles Archive (18 October).
* Holmes, Thom. 2012. Electronic and Experimental Music: Technology, Music, and Culture, fourth edition, revised and annotated, with contributions by Terence M. Pender. New York: Routledge. ISBN 9780415896467 (cloth); ISBN 9780415896368 (pbk.); ISBN 9781136468957 (ebook).
* Koenig, Gottfried Michael. 1991–2002.Ästhetische Praxis. Texte zur Musik. Saarbrücken: Pfau-Verlag.
* vol. 1: 1954–1961. 1991\. ISBN 3-928654-03-9.
* vol. 2: 1962–1967. 1992\. ISBN 3-928654-04-7.
* vol. 3: 1968–1991. 1993\. ISBN 3-928654-05-5.
* vol. 4: Supplement I. 1999\. ISBN 3-89727-056-0.
* vol. 5: Supplement II. 2002\. ISBN 3-89727-084-6.
* Kurtz, Michael. 1992. Stockhausen: A Biography, translated by Richard Toop. London and Boston: Faber and Faber. ISBN 0-571-17146-X (pbk).
* McGuire, John. 1983. "An Electronic Music Project: The Composition of Pulse Music III". Neuland: Ansätze zur Musik der Gegenwart (Jahrbuch) 3: 252–67. Bergisch Gladbach: Neuland. Online version on Kalvos & Damian website (Accessed 29 April 2014).
* Morawska-Büngeler, Marietta. 1988. Schwingende Elektronen. Eine Dokumentation über das Studio für Elektronische Musik des Westdeutschen Rundfunks in Köln 1951–1986. Cologne-Rodenkirchen: P. J. Tonger. ISBN 3-920950-06-2.
* Parsons, Jeff. 2017. "Celebrating the Studio for Electronic Music: Google Doodle Marks 66th Anniversary of 'First Modern Music Studio'". Daily Mirror (18 October).
* Schütz, Heinz, Gottfried Michael Koenig, Konrad Boehmer, Karlheinz Stockhausen, György Ligeti, Mauricio Kagel, and Rolf Gehlhaar. 2002. "Erinnerungen 2: Studio für Elektronische Musik". In Musik der Zeit, 1951–2001: 50 Jahre Neue Musik im WDR—Essays, Erinnerungen, Dokumentation, edited by Frank Hilberg and Harry Vogt, 147–54. Hofheim: Wolke. ISBN 3-923997-98-1.
* Stockhausen, Karlheinz. 1964. Texte zu eigenen Werken, zur Kunst Anderer. Aktuelles, vol. 2, edited by Dieter Schnebel. DuMont Dokumente. Cologne: Verlag M. DuMont Schauberg.
* Stockhausen, Karlheinz. 1998. Texte zur Musik 1984–1991, vol. 8 (Dienstag aus Licht; Elektronische Musik), edited by Christoph von Blumröder. Kürten:Stockhausen-Verlag. ISBN 3-00-002131-0.

## Further reading

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* Beyer, Robert [de]. 1928. "Das Problem der kommenden Musik". Die Musik 9 (1928): 861–66.
* Donhauser, Peter. 2007. Elektrische Klangmaschinen. Die Pionierzeit in Deutschland und Österreich. Vienna, Cologne, Weimar: Böhlau. ISBN 978-3-205-77593-5.
* Eimert, Herbert. 1953. "Was ist elektronische Musik?" Melos 20 (January): 1–5.
* Eimert, Herbert. 1954a. "Der Sinus-Ton". Melos 21:168–72.
* Eimert, Herbert. 1954b. "Elektronische Musik". Die Musik in Geschichte und Gegenwart 3, cols. 1263–68.
* Eimert, Herbert. 1963. Einführung in die elektronische Musik: Akustische und theoretische Grundbegriffe; Zur Geschichte und Kompositionstechnik, with LP recording. Mainz: Schott.
* Evangelisti, Franco. 1985. "Vom Schweigen zu einer neuen Klangwelt". Musik-Konzepte 43–44:40–166.
* Gottstein, Björn. 2002. "Klangküche einer Tongemeinschaft: Das Studio für elektronische Musik des WDR". In Musik der Zeit, 1951–2001: 50 Jahre Neue Musik im WDR—Essays, Erinnerungen, Dokumentation, edited by Frank Hilberg and Harry Vogt, 125–134. Hofheim: Wolke. ISBN 3-923997-98-1.
* Grant, Morag Josephine. 2001. Serial Music, Serial Aesthetics: Compositional Theory in Post-war Europe. Cambridge and New York: Cambridge University Press.
* [Hilberg, Frank, and Harry Vogt]. 2002. "Produktionen des Studios für Elektronische Musik 1952–2001". In Musik der Zeit, 1951–2001: 50 Jahre Neue Musik im WDR—Essays, Erinnerungen, Dokumentation, edited by Frank Hilberg and Harry Vogt, 137–45. Hofheim: Wolke. ISBN 3-923997-98-1.
* Huck, Oliver. 2003. "Hymnen auf die elektronische Musik und mit konkreten Klängen: Musique concrète und rundfunkeigene Musik als Asymptoten des Studios für elektronische Musik des WDR". In Alte Musik und 'neue' Medien, edited by Jürgen Arndt and Werner Keil, 28–55. Diskordanzen 14. Hildesheim: Georg Olms. ISBN 978-3-487-12516-9.
* Koenig, Gottfried Michael. 1976. "Elektronisches Musikstudio". Die Musik in Geschichte und Gegenwart. 16, cols. 59–62. Kassel: Bärenreiter.
* Meyer-Eppler, Werner. 1953. "Elektronische Kompositionstechnik". Melos 20 (January): 5–9.
* Ruschkowski, André. 1998. Elektronische Klänge und musikalische Entdeckungen. Stuttgart: Reclam. ISBN 3-15-009663-4.
* Sabbe, Herman. 1981. "Die Geburt der elektronischen Musik aus dem Geist der synthetischen Zahl." In Karlheinz Stockhausen. ...wie die Zeit verging..., edited by Heinz-Klaus Metzger & Rainer Riehn, 38–49. Musik-Konzepte 19. Munich: Edition Text und Kritik. ISBN 3-88377-084-1.
* Stockhausen, Karlheinz. 1963 Texte zur elektronischen und instrumentalen Musik, vol. 1, edited by Dieter Schnebel. DuMont Dokumente. Cologne: Verlag M. DuMont Schauberg.
* Stockhausen, Karlheinz. 1978. Texte zur Musik 1970–1977, vol. 4, edited by Christoph von Blumröder. DuMont Dokumente. Cologne: DuMont Buchverlag.
* Stockhausen, Karlheinz. 1989. Stockhausen on Music: Lectures and Interviews, edited by Robin Maconie. London and New York: Marion Boyars. ISBN 0-7145-2887-0 (cloth); ISBN 0-7145-2918-4 (pbk).
* Toop, Richard. 1999. "Zwischen Spekulation und Wirklichkeit: Stockhausen im Studio". In Internationales Stockhausen-Symposion 1998, edited by Imke Misch and Christoph von Blumröder, 134–147. Signale aus Köln 4. Saarbrücken: Pfau-Verlag. ISBN 3-89727-050-1.
* Ungeheuer, Elena. 1992. Wie die elektronische Musik 'erfunden' wurde. Quellenstudie zu Werner Meyer-Epplers Entwurf zwischen 1949 und 1953. Mainz: Schott. ISBN 3-7957-1891-0.
* ""Studio für elektronische Musik des WDR" verlässt Köln". neue musikzeitung (in German). 26 July 2017. Retrieved 24 October 2023.
* "Stadt Köln übernimmt Stockhausen-Studio". neue musikzeitung (in German). 24 October 2023. Retrieved 24 October 2023.

## External links

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Wikimedia Commons has media related to Studio for Electronic Music of WDR Cologne.

* Anon. n.d. "Studio für elektronische Musik ohne Zukunft – WDR nimmt das Angebot von Haus Mödrath nicht an". Haus Mödrath (late 2019 or early 2020) (in German)
* Crab, Simon. 2014. "WDR Electronic Music Studio, Werner Meyer-Eppler, Robert Beyer & Herbert Eimert, Germany, 1951". Part of the "120 Years Of Electronic Music" project. WordPress.com (Accessed 26 April 2014).
* Hermes, Ida. 2020. "Was wird aus dem WDR-Studio für elektronische Musik?". Deutschlandfunk (22 January) (in German)
* Lack, Wolfgang. 2002. "Elektronische Musik aus Köln". University of Osnabrück website (8 June) (archive from 20 May 2012, accessed 26 April 2014).
* Schwind, Elisabeth. 2001. "Museum oder Produktionsstätte? Das Studio für elektronische Musik des WDR". Neue Zürcher Zeitung (19 October).

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Electronic and electroacoustic music

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