Introduction

In late February 2026, word of Éliane Radigue‘s death began to spread. She had passed away on the 23rd of February at age 94. Almost immediately, tributes started pouring in from everywhere, including major mainstream outlets like the New York Times. Although she had operated outside the view of the mainstream for most of her career and was mostly known to those in the avant-garde, in the last fifteen years of her life, Radigue’s work had slowly assumed a considerable public profile with many articles, documentaries like “Sisters With Transistors”, and the excellent “Echoes” by François Bonnet and Eleonore Huisse, who have made it available for free here following Radigue‘s death.

For those not already very familiar with Radigue’s work, the following is meant as an introduction to the development and trajectory of her work, as well as a primer to her unique approach to synthesis techniques and composition that we can still stand to learn much from today.

Unless stated otherwise, all quotations and images below are taken from the interview-book “Intermediary Spaces”(2023) that Julia Eckhardt compiled in collaboration with Radigue herself.

Early life and musical background (1932-1967)

Éliane Radigue was born in 1932 in Paris and took piano and music theory lessons in her childhood. In 1950, she married the visual artist Arman (Armand Fernandez), with whom she had three children, and moved to Nice, where she studied music theory and harp at the Nice conservatory.

In the mid-1950s, through a chance encounter, she met the musique concrète pioneer Pierre Schaeffer and interned at Schaeffer‘s and Pierre Henry‘s Studio d‘essai between 1955 and 1958, where she learned the recording and tape techniques that dominated the repertoire of 1950s and 1960s electronic music. And although Radigue never made “musique concrète”, tape editing and mixing techniques remained a crucial part of her work throughout her electronic period and they significantly shaped how she worked with synthesizers.

After the end of her time working with Schaeffer, Radigue then took an extended break from her musical activities to focus on raising her children that lasted until about 1967, although she did create the composition Asymptote Versatile around 1963/64. It was finally performed in 2023 for the first time, and it is interesting how much this early piece already resembles her electronic and later acoustic work. Like few other artists, Radigue had pursued a singular and focused vision throughout her entire artistic life: “Jokingly, Radigue says she has made the same music all her life, with different means but with basically always the same quest and strategies.”

(Radigue with Pierre Schaeffer in 1957,  picture by Armand Fernandez, taken from "Intermediary Spaces")

Feedback period (1967-1971)

With her husband Arman beginning to attain success in the visual art world, the family started spending more and more time in New York City. While in the US, Radigue then became familiar with the American avant-garde scene of the 1960s and 1970s, meeting and befriending artists like Steve Reich, John Cage and David Tudor. According to Radigue, her music received significantly more support in this American milieu than back in her home of France, which at that time still was dominated by a more traditional musical culture.

When Radigue and Arman separated amicably in 1967, Radigue moved back to Paris with her children, with Arman continuing to support the family financially. Being back in Paris, Radigue then began to look to assemble a small studio of her own - which she eventually did in the form of a setup with two tape recorders, a small mixer, and a Sennheiser microphone. And while she did not yet possess a synthesizer at this time, Radigue quickly began to formulate a rich sonic language using analog feedback techniques.

According to Radigue, she first learned about feedback from Pierre Henry. As she notes, there were two main ways of generating analog feedback at the time - those being feedback between a speaker and a microphone, and feedback between two tape recorders. Although Radigue did dabble in the first, she mostly focused on the latter, as she felt it was more controllable. 

This resulted in a slew of feedback-centered pieces around 1967 to 1970, including her first feedback pieces “Jouet Electronique” (1967) and “Elemental I” (1968), “In Memoriam-Ostinato” (1969), “Vice-Versa” (1970) and her final feedback piece “Opus 70” (1970). Listening to these pieces now, over fifty years later, it is immediately striking how sonically rich and complex they sound even today, despite the very simple means with which they were created.

Electronic period (1971-2000)

During a 1970 residency at NYU in New York to which she was invited by Steve Reich, Radigue first learned about synthesizers when encountering the university‘s Buchla system. In 1973, she also went to CalArts‘ Mills College and met Serge Tcherepnin, the inventor of the Serge synthesizer.

According to Radigue, she was initially intrigued by synthesizers because they could allow her to manipulate sound more finely and gradually than her feedback processes did. As such, for her, the discovery of the synthesizer was less of a musical "reinvention" than an opportunity to pursue what she was already looking for with a higher degree of control over the process:

“I’ve never been fond of technology, it was just a necessary means to produce the sounds I was looking for, and to better control slow changes within these sounds […] I had a real physical relationship with the ARP as soon as I could forget the burden of technic and achieve the kind of symbiosis that any musician has with their instrument, whether acoustical or electronic." (taken from the Cambridge Companion To Electronic Music, p. 292)

When it comes to her choice of synthesizer, Radigue said that she landed on the legendary ARP2500 more or less randomly, but that she immediately knew that it was the right instrument for her (“love at first sight”), and that she preferred the ARP‘s switch matrix system to the cables of Buchla and Moog systems.

While Radigue mostly did work with her ARP during her electronic period, she did use a Buchla system on 1971‘s “Chry-ptus”, a Moog Modular in 1973 on “Arthesis”, as well a Serge system (in combination with the ARP2500) on 2000‘s “L'Île Re-Sonante”, which ended up being her final electronic piece.

The most significant piece she composed with the ARP2500 is probably the three hour long, three-part Triologie de la Mort, which many also consider to be her most important piece in general. Comparing the Triologie with Radigue’s earlier feedback work, the additional control she felt with the synthesizer is clearly audible, in that the timbral developments and movements are generally a lot more subtle and gradual, at times barely even perceptible without active concentrated listening.

(Radigue working with the ARP (1972),  picture by Yves Arman, taken from "Intermediary Spaces")

Acoustic period (2001-2026)

According to Radigue, she did not set out to compose acoustic pieces on her own, but in 2001, she met the musician Kasper Toeplitz and started working on a piece for his electric bass at his request. From there on, Radigue switched to the composition of acoustic pieces, marking the third “phase” of her work. Radigue’s acoustic composition process was relatively unusual for classical music, in that instead of relying on a fully composed written score, Radigue would be working directly with the musicians on very specific playing techniques that would bring out an instrument‘s specific resonances and fundamental/partial relations, directly mirroring the approach of her electronic period. Listening to Radigue’s Occam Ocean series - her main acoustic project from 2011 to 2026 - it is striking how much her compositions can make acoustic instruments sound like electronic drone machines at times, again emphasising the consistent sonic philosophy running throughout her work.

Éliane Radigue’s synthesis techniques

In reconstructing Radigue’s synthesis techniques, it is first important to note that her use of the ARP2500 was somewhat peculiar, in that she knew exactly what she wanted from the instrument and eliminated every feature – including features like sample & hold, sequencing, and envelope generators – she did not think she needed to realize her musical vision. She also famously refused the keyboard that was offered to her alongside the system, as she felt no need to compose traditional melodies and harmonies.

In general, at the core of Radigue‘s ARP2500 techniques was the combination of oscillator beating - e.g. the alignment of two or more very slightly detuned analog VCOs - and careful work with harmonics-generating additive processing:

“A synthesizer is a rather complex instrument […] Beatings can be produced by various protocols, depending on the frequencies used. They are then subjected to different operations: ring modulation, amplitude modulation, frequency modulation […] Then, the last word - the reason I chose the ARP 2500 - is the superb filters, lowpass, highpass, etc. topped off by the resonance factor.”

While it would be a mistake to attribute the sound of Radigue’s music to the particularities of any specific instrument, it does seem like there was something specific to the ARP2500’s 1047 Multimode Filter/Resonator that Radigue made frequent use of during her electronic period. Instead of going into self-oscillation, the 1047 can go into extremely high Q values that will boost individual partials by up to over +50db, effectively acting like a “timbral microscope” that can bring otherwise barely audible partials to the forefront. In general, there is something very microscopic to Radigue’s approach to synthesis, in that it focuses on the “delicacy and subtlety” of electronic sound rather than its extremes:

“In classical music, I always preferred slow movements because slowness allows you to be overcome with delicacy and subtlety of the sound within the sound […] With the synthesizer, it is modulations in frequency and amplitude, ring modulations, different filtering modes and resonances and mixing factors, which permit the constitutive richness of a body of sound to develop, as well as the flexibility that allows for progressions with and by its own components.” 

Further describing her process of synthesizing these “slow movements”, Radigue says:

“To begin with, I had this mass of sound whose functions were distributed amongst the different modules. It was enough that I vary, for example, the proportions of the two main signals in a ring modulator, for the whole structure to change. Everything could change everything. For each track, I had between twenty-five and forty parameters, if not more, with which I could work ... the aim was to make the sound progress through slightly changing one of the parameters of the constituent parts of this mass of sound.” (source: Electronic Beats)

As such, it seems like Radigue’s approach to synthesis was a careful mixture of different additive techniques - FM, AM and ring modulation - combined with the use of the ARP’S 1074 filter acting as a kind of modal resonator, which allowed her to be very specific about the kind of “ambivalent” harmonic relations she wanted to conjure:

“I work with mostly harmonic, slightly ambivalent pitch relations [...] the values desired reside in the richness of the partials.”

It is these very specific harmonic relations that give Radigue’s music its slightly “ghostly”, eerie, but also meditative feeling.

Radigue then recorded these synth passages on tape and subsequently edited, arranged and mixed those tapes with musique concréte techniques. Describing this process, Radigue says:

“What’s more, when I had made the first sounds for the piece I’d leave them for two or three months in order to listen to everything with a  fresh ear — intentionally, to decide which to throw away and which to keep. Then, when I arrived at the final mix, it was a kind of climax because all the tape had to be ready and in a chronological order. From there I had to manage it, stopping one tape, bringing one in and one coming out, I had no Pro Tools whatsoever [laughs], I had to do the whole thing manually. If something was eighty minutes long and something went wrong at minute 74 everything had to be redone from the very beginning!” (source: Electronic Beats)

As such, the synthesis itself was only a part of Radigue’s compositional process. In stark contrast to the often improvised nature of contemporary “drone” music, her pieces were always carefully and meticulously plotted, often on score-like graphic notation.

(Radigue's ARP2500 "score" patch notation for the piece "7th Birth" (1970), taken from "Intermediary Spaces")

According to Radigue, some of her pieces took well over a year to complete, which was also because of her very strong emphasis on listening. While in conversation with Julia Eckhardt, Eckhardt remarks that “you [Radigue] listen like a magnifying glass”, referring to the fact that Radigue’s music was above all about exploring the different possibilities and subtleties of listening to sound that only emerge after an active and deliberate engagement with the act of listening itself:

“One thing about listening [...] This is something important within my work because I’ve always worked very much alone, except for my cat for an assistant but she didn’t say that much. So I had several ways of listening — this is why it took a lot of time — from listening freely to technical listening, that is to say listening to the technical problems. You can listen to something ten ways at least. Everything I’ve ever done has been submitted to the different ways of listening, including distracted listening.“ (source: Electronic Beats)

written by Vincent Jenewein

You can find an archive of Éliane Radigue’s music over at the INA GRM Bandcamp here.