Pierre Boulez

Pierre Boulez biography

Born in Montbrison/Loire on 26 March 1925; Pierre Boulez was a composer, conductor, thinker, a motor of international musical life, an emblematic figure in post-war European, indeed, world culture.

He was a living classic. Ever since the 1950’s, composers around the world followed with curiosity what he was writing, to see if they could adapt his ideas in their own music or to reject them in their search for an idiom they could call their own. In 1957, György Kurtág arrived in Paris with the goal to compose something he could show to Boulez (in the end, he left without a work worthy of being presented). The music the French composer has written ever since the late 1940’s was a conscious act of rebellion against tradition as represented by Schönberg or Stravinsky but also his teacher, Messiaen, whose influence has nevertheless left its mark on Boulez’s music.

In his compositions but also in his writings, Boulez was initially an angry and rebellious young man (see his scathing obituary Schönberg est mort). With the passage of time as he became an established figure, with France inviting him back to found IRCAM and the Ensemble Intercontemporain and his career as a conductor also taking off, there has probably been less to rebel against and Boulez has mellowed and broadened his horizons to conduct a wide range of repertoire including Bruckner and Mahler.

Boulez also was a highly influential teacher. In Lucerne he passed on his immense knowledge to fledgling conductors at the Festival Academy.

Pierre Boulez died on 5 January 2016 in Baden-Baden.


1925 – born on 26 March in Montbrison, Loire, France
receives first piano lessons; attends high school in Montbrison, later in Saint Étienne

1941 – takes prepartory mathematics courses in Lyon for the entrance examination of the École Polytechnique in Paris

1942 – decides to pursue a profession in music; moves to Paris

1944 – participates in Olivier Messiaen’s harmony class at the Paris Conservatory

1945 – takes lessons in counterpoint with Andrée Vaurabourg-Honegger, in composition with Messiaen, and in twelvetone technique with René Leibowitz

1946–1955 – responsible for stage music at the Renaud/Barrault Theatre Company

From 1950 – compositions performed in Paris and in Donaueschingen

1954 – founds the "Concerts du Petit-Marigny" under the patronage of the Renaud/Barrault Company, renamed "Domaine Musical" in 1955

1955–1960 – gives analysis courses at the International Summer Courses in Darmstadt

1955Le Marteau sans Maître première conducted by Hans Rosbaud in Baden-Baden

1957 – performs his[nbsp]Troisième Sonate for piano in Darmstadt

1958 – première in Hamburg of two Improvisations sur Mallarmé; together with Improvisation III, Tombeau and Don they comprise the orchestra work Pli selon pli - Portrait de Mallarmé, completed in 1962

From 1960 – gives analysis and composition courses in Basel

1963 – guest professorship at Harvard University; increased conducting activity

1966 – first conducts in Bayreuth (Parsifal); conducts Tristan and Isolde in Japan

1967–1972 – regularly conducts the Cleveland Orchestra; Gilbert Amy takes over leadership of the Domaine Musical concert series

1969–1975 – principal conductor of the BBC Symphony Orchestra

1970–1977 – principal conductor New York Philharmonic Orchestra;
plans the IRCAM in Paris

1976 – founds the "ensemble intercontemporain" in Paris
conducts Wagner’s Ring cycle in Bayreuth directed by Patrice Chéreau (till 1980)

1977 – IRCAM opens its doors, which Boulez directs until 1991

1979 – première at the Paris Opera of Alban Berg's Lulu as completed by Friedrich Cerha; Ernst von Siemens Music Prize

1980 – French National Award of Merit

1989 – Ring of Honor of the City of Vienna

1991 – honarary doctorate from the University of Frankfurt

1992 – Theodor W. Adorno Prize of the City of Frankfurt

1996 – Ring of Honor of the City of Vienna

1997 – world premiere of Anthèmes 2 at Donaueschingen

1998 – Honorary Doctorate from Connecticut College;
world premiere of sur Incises in Edinburgh

1999 – world premiere of Notations VII in Chicago

2000 – Numerous concerts throughout the world in honor of his 75th birthday (London, New York, Paris, Vienna);
Winner of the 2000 Grammy Award Category "Classical Contemporary Composition" for Répons;
Israeli Wolf Prize for the Arts

2001 – Wilhelm Pitz Prize of the City of Bayreuth

2002 – Composer-in-residence at the Lucerne Festival
World Première of Dérive 2 with Ensemble Intercontemporain on 14 September in Lucerne

2004 – Artistic Director of the Lucerne Festival Academy (until 2007)

2009 – receives 2009 Kyoto Prize his lifetime achievements

2011 – receives Giga-Hertz-Award for electronic music

2012 - awarded the Golden Lion for Lifetime Achievement of the Venice Biennale

2013 – receives the Frontiers of Knowledge Award of the BBVA in the Contemporary Music category
honoured with the Cleveland Orchestra Distinguished Service Award

2015 – becomes honorary citizen of Baden-Baden
awarded a Grammy Lifetime Achievement Award
receives the Bach Prize 2015 of the city of Hamburg

2016 – Pierre Boulez passes away on 5 January in Baden-Baden

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About the music

For the first issue of our new newsletter Musikblätter, Pierre Boulez spoke to Universal Edition about his own music.

“… and then you discover yourself

Mr. Boulez, for just a brief moment, at the beginning of the 1950s, it seemed that serial methods were asking to be extended across every element of composition. This represented the thrilling possibility that a new musical system might be found, but there was also the anxiety that music’s creation would become as automated as heavy industry – allowing masterpieces to be made without a master, merely by the hammer of technology. But this sort of total organisation proved to be impossible – luckily so, one might say. It was shortly after this discussion that you composed Le Marteau sans maître, which was premièred exactly 55 years ago here in Baden-Baden. Thinking back to when you began working on this composition: did you want to use Le Marteau to demonstrate that spontaneity and system can indeed coexist?

Boulez: The fact is that when I composed the structures beforehand, I was totally responsible for that – because I wanted the composer to be anonymous. The composer was just a transmitter and nothing else. But very early on, I became aware of the fact that this was entirely impossible. It is possible in some cases, only some extreme cases, but not always; you cannot base a composition on that idea. But I did not want to go back to the twelve-tone system, because I found the twelve-tone system impossible as a way of constraining the available possibilities. So therefore, I began to develop a system in which freedom was possible, and I conquered my own freedom not only regarding the twelve-tone system, but also with regard to the general possibility of composing purely with a system. And therefore, Le marteau – even from the vantage point of 50 years later – was for me a beginning of sorts … the beginning of a conquest, of freedom.

Le Marteau appeared to be a link between two seemingly incompatible experiences: the strictly constructivist musical thinking of the German and Viennese school as mediated by Webern, and what one might call the more ornamental elements of French music, especially of Debussy and Messiaen. Would you agree with this?

Boulez: Yes, I agree with the view that I attempted to unite two parts of the musical world which had previously been incompatible – and had even regarded each other with a sort of distance. I don’t think that Schönberg was very … not friendly to, but I mean: in agreement with Debussy’s point of view, which he certainly found to be too free. Nor do I think that Webern or even Berg were particular admirers of Debussy. They thought: too free, not constructive enough. And I suppose that for me, on the contrary, the constructivism of the three Viennese was occasionally a bit of a burden, and I thought that the inventiveness and ingenuity, the spontaneity of a Debussy were very necessary sometimes. You really cannot just be constructive all the time; you have to be descriptive, as well. And I suppose that’s the sort of combination between constructivism and spontaneity which I found to be very important.

Was this your approach from the beginning, attempting to strike a balance between these two?

Boulez: Well, I suppose if you look at my second piano sonata, certainly it was constructed, totally, but there was also this element of rapture …

Was it originally your intention to find a balance between these two schools?

Boulez: Yes, between the spontaneity of the one and the constructivity of the other. I really think that there was a balance to be established. And I was attracted to both sides. I must admit that sometimes, of course, the music of Debussy is very light. I won’t deny that. Sometimes, I say. In his major works, however, certainly not – these are as deep as can possibly be. And the constructivism of the Viennese School, on the other hand, can also sometimes be viewed as burdensome. Therefore, you have to work with this constructivism in such a way that you are also free from it – and I suppose that’s the liaison between constructivism on the one hand and spontaneity on the other. For me, these are the two elements of a musician.

Le Marteau was praised highly for a new sound appearing in new music. What sound did you have in mind when you started?

Boulez: Well, at the time I was very interested in other cultures and I listened to quite a lot of non-European music: Balinese music, African music, Japanese traditional music, Chinese opera and so on. I was similarly interested in the sounds contained in such music, and I do think that each civilization has its own sound. Bali, for instance, has a kind of metallic sonority. This sonority goes with their music, which is expressed not only by the pitches, but by the way the pitches are produced – and that’s via metal. And if you go to Africa, for instance, wood is one of the main sound-producing materials, and in that case the sound consists not only of the pitch but also of the sound of the wood. And so on and so forth. Therefore, yes: for me, remaining in the tradition of the Viennese School and the European school was too much, and I wanted to have another world. And I am generally very sensitive to sound. I think that sound should be a very important element of music, and not just something you "add" superficially afterwards. You therefore hear a different sound in my work – in the Improvisations sur Mallarmé, for instance. And in the works that followed, up to the most recent ones like sur Incises (which is unlike any other sound), you have forefathers. Let’s take Stravinsky’s Les noces, for instance: this is a forefather of the sound of sur Incises, but when I add the percussion, which is very important, and the harps, then the sound is totally different. And this sound harkens back to Bali and to the African sphere. And it is not at all of the European sphere. And that, for me, is very important, that we absorb other cultures: not only in terms of musical content, but also in terms of the way they are transmitted – and hence, in terms of sound.

This brings to mind Debussy, who was immensely influenced by the World Exhibition in Paris and the music which he discovered there.

Boulez: Certainly. But in his case, some of his work was influenced quite generally by the musical content, and some of these works were more superficial, with the pentatonic scale and so on. I like the world of Debussy when it’s his own world – influenced by the outside, but still his own world.

You mentioned sur Incises: you use steel drums there, but not for exotic reasons if I understand you correctly.

Boulez: No, I like the sound of steel drums because of their innate possibilities: first in terms of the sound itself, but also because when you do a crescendo, or a very strong sforzato, you have a resonance which is very interesting in and of itself, because the sound is so modified that it ends up being practically another sound. And I like this transformation. If you play a sforzato on a grand piano, there’s not that much change to the actual sound. But with the steel drums you have a modification of the sound which sometimes even approaches electronic sounds – putting it closer to an electronic sound than to the sound of a normal acoustic instrument.

Speaking of the use of the voice in Mallarmé, Salvatore Sciarrino has remarked that you’re one of the few composers to possess the key to music theatre – namely, a vocal style that is entirely your own. If you agree: is this style related to your understanding of how lyrics function in contemporary music?

Boulez: Well, that depends. Of course, with the voice, you have two possibilities. You express the text directly, or you take the text as it is but extract from it the possibilities you want to extract. And you can destroy the text, too – in a positive sense, if I may say so. And in Mallarmé, especially, more so than in Le marteau, I worked with what I’ll call the subtext. So, how many syllables? Eight. The number eight becomes very important, because the verse is composed of eight syllables. Rhyming is important, as well – whether you can transmit the rhymes via the structure. In the Second Improvisation on MallarméI do that very quickly. The first strophe is styled as a melodic line with a lot of ornaments. The second set of four verses I find to be syllabic, entirely syllabic. And then, when I come to the third set with its alternating rhymes, I constantly alternate the syllabic method of setting the text with the more melodic method. So in my musical structure I reflect the structure of Mallarmé’s verses. What’s interesting to me is not only the poetic aspect, but also the structural aspect of the poetry. And when some poet like Mallarmé is so interested in the structure of the verse and of the sonnet, which are quite strict, then it’s interesting to take that and to bring it into the musical content.

You are no longer interested in composing or orchestrating lyrics, this being merely "lyrics and music"?

Boulez: Well, if you take simply the meaning of the poem, you miss quite a lot of the relationship which you can establish with the text. For me, it’s important to establish not only a poetic relationship and a relationship of meaning, as I put it, but also a structural relationship.

Coming back to Le Marteau: apart from revising the instrumentation immediately after having composed it, you have left it alone – which is absolutely unusual for you. It is as if you recognize the special status of Le Marteau. Would you agree?

Boulez: Yes, certainly, it was a period where a long-held doubt had passed. Without doubt, you finish – and with doubt, you have a tendency never to finish. And that’s what moved me to refrain from touching certain works again. But there are some works which are unfinished not because I gave up, but because the reflection on the content of the work, on the structure of the work, was not very clear to me. Therefore I do return to works, but there are also some works which I don’t touch again – Derive II, for instance,I will not touch again. It’s finished because I worked on it for quite a few years, and then I discovered of way of structuring, of composing the work which was totally different than what I had done up to that point, a sort of narrative aspect of the work. It was then that I saw that this narration was finished, and that I could not add anything – the addition would have been totally artificial. There other works which I want to finish, and some other works which I don’t want to finish. You know, I have a relationship with my work which is very sentimental … yes, certainly.

Which work would you love to finish?

Boulez: Oh, I would especially like to finish Éclat/Multiples. That’s one of the works which is almost finished, and, you know, I have practically twice the length of the work as I play it now, and therefore I would like to finish because the concept of the end is already there. Similarly, the concept of the end of Derive II was also already there fifty years ago, but it was too soon: so I composed it, and knowing that I would compose a long development in between, well, I jumped to the end – certainly, because the end was already there. And sometimes you think of the end long before the rest of the piece. And therefore I keep it in reserve. 

Speaking of Derive II, it was preceded by Derive. And there, as in many works, you used the Sacher hexachord. Can you say something about how you found this chord and why it became so important for you?

Boulez: Well, I did not discover the chord myself – the series of six pitches. That was given to me for a homage to Paul Sacher for his 70th birthday. For this I wrote Messagesquisse, which was very short, because it was meant to be played in a concert for which a great many composers had written very short works. So it was a short occasional piece. And it was while working on this piece that I finally discovered all of this chord’s possibilities. In my composing, process is an important aspect. So I look and have some quite spontaneous reactions. After that, I look at what I’ve done, and I say: but with this material, I could do far more. And so it went with the Sacher material. I noticed progressively, while I was working on it, that there were possibilities I’d never used before. And those are in sketches. Because when I have such ideas or make such deductions, I write them down immediately, or as immediately as I can. Doing so is difficult sometimes, so one often ends up doing so after a delay. But I mean, that's spontaneity, I would like to say. And that remains – hence the name Derive, because it remains there, unused, and it’s derived from things I have already written. And so Derive I, now – we’re still speaking of Derive I – is derived from the material I used for Répons, and I still have a lot of material I wrote for Répons which is unused. And if you go to the Sacher Foundation, you can see this material. It’s not kilos’ worth, but there are many pages containing material which was used quite a lot after having been determined and found. So that’s my way of composing.

So can we  say that you found out only coincidentally that the potential of the Sacher chord is that immense?

Boulez: That was not completely by chance, but I used this material like I would use any other material. I mean by this that the point was not to make reference to Paul Sacher each time – certainly not, although sur Incises is dedicated to him. But I did not really write sur Incises just to dedicate it to him – I wrote it because the material was there, and because I asked myself what I would do with this material. I am very practical, so I don’t like to invent something which gets lost. It’s simply that.

When we look at the characters of Derive I and Derive II: although they come from the same material, they are totally different…

Boulez: They do come from the same material, but they are totally different because the first – Derive I – was improvised, practically speaking. Sir William Glock, who was head of music at the BBC, engaged me for that broadcaster, and he was also head of a festival. And since he was about to leave this festival, the musicians – who knew that I was very close to him – requested an homage. It was just a short, last-minute piece. I remember being in Los Angeles, performing a series of concerts and working between the rehearsals so that I could send the score at the last minute. And I think that in another Derive, I will certainly use the scheme of Derive I, but in a more complex manner; I already have Derive III in my head, and I hope I will have the time to finish it.

There is a quotation of Gustav Mahler according to which he said: "the material composed him." Would you agree with that regarding Derive II?

Boulez: Yes, definitely. I think that if you have an interesting and productive relationship with the material, the material certainly will compose for you. But you must know how it is composed. And I find it wonderful to think of it such that the material in fact composes with you, and you compose with the material. It’s an exchange. Because to me, this is just another way of expressing the idea of deduction. You have material. What do you do with it? It’s not just spontaneity that is important, but the question of what you do with this spontaneity! And you invent in a sort of hyper-spontaneity – that’s the real difficulty of composing. So if you look, for instance, at pieces which are in some way "derived" – such as Number Two of my Notations – and compare the length of the original piece and the final score then the work is ten times longer and the material is exposed much more forcefully than it was in the small piano piece. And thus you are confronted: I particularly like the experience of being confronted with material you invented sixty years ago, and you say: yes, I recognize this material, I composed it, that’s my material. But I did nothing with it at the time … so what can I do with it now? And I suppose that’s the question that Wagner also asked himself when he was composing Gotterdämmerung. He must’ve thought:what can I do with material I invented for Rheingold? Twenty years passed in between. So you’ll understand how I found that very striking when I conducted the Ring in Bayreuth. To see, to conduct the Ring from beginning to end – you finish with Götterdämmerung, and two days later you begin again with Rheingold. And yousee the immense difference between two pieces – especially between Rheingold and Götterdämmerung … he could not possibly have composed that 20 years sooner! And the way he reflected on himself – it was something that really struck me when I conducted the Ring.

But the interesting thing about the Notations is that you had forgotten that these pieces existed.

Boulez: I had not really forgotten – it all comes back spontaneously, after all. So I remembered them, and the fact that I’d composed them, that’s for sure … you never completely forget things like that. But I didn’t really remember the text. And when I saw the text, I said: oh, that's interesting. And I generally didn’t want to have the earlier works I’d composed viewed as "my" works. But these I did. I thought to myself: they’re very simple, they’re naïve, but they involved a process which I do not find uninteresting. On the contrary, I do find such ideas interesting, and I desire to magnify them.

But is it true that they were somehow lost, and that someone found them?

Boulez: They were. The manuscript got lost, and then it got lost again. I studied together with a composer named Serge Nigg, and I had not seen him for quite a while. It was around the time when I returned from my six years in New York that I received a letter from him to the effect that the radio wanted to organise a broadcast on the early students of Messiaen. They wanted to use the pieces those students had composed while studying, and Nigg asked me if I would allow it. I said yes in principle, but I didn’t have a manuscript and wanted to see one – I told him that if he would send me a manuscript or a photocopy thereof, I would say yes or no. So he sent me a photocopy of the manuscript, and I said: yes, you can. I was a student of Messiaen when I wrote that, and it was perfectly justified to use it as an example. And later on he told me – or I learned, I don’t know through what source – that the manuscript got lost again after he sent it. I myself didn’t have to send it back, of course, because I didn’t see the manuscript, only the photocopy. And when they went to put it back in the library at the radio, they couldn’t find it. So it was lost and then lost again.

You once told me that with these Notations you wanted to make "fun" of twelve-tone composition.

Boulez: Yes, because with Leibowitz, the academism of his analysis and so on was unbearable to me, and in a funny way particularly unbearable after having experienced Messiaen. While I did not agree with all that Messiaen was doing, at least he was inventive. And he had his own world. But Leibowitz, that was just kind of salt on nothing; it was so dry and so unimaginative, only one-to-twelve, twelve-to-one, six-to-one, one-to-seven and so on … it was dreadful. And so I said to myself, well, I can do this too. So I did twelve pieces of twelve bars each, and each piece begins with one, with two, with three, with four and so on. I called that my system, but it doesn’t sound like it. It just didn’t. But the pieces were not fun. They were just spontaneous pieces, because I composed them within two or three days – I don't remember exactly. It was just before Christmas of ‘45.

Do you remember where you composed them?

Boulez: Where? In Paris, yes … where I was living at the time.

And you never thought that their potential was so strong?

Boulez: No. No, because once I came upon some sketch or other, and I put it in the Improvisation sur Mallarmé, as a kind of remembrance. And that was it. And I didn’t have such luck with another piece which was likewise interesting to me. After my second piano sonata, I wrote a symphony concertante for piano and orchestra. I didn’t orchestrate it right away. And then I went to Cologne to see Stockhausen at the studio there, and there was this Putzfrau who cleaned the room … and the piece disappeared – totally. I hadn’t even sketched it, nothing, and I remember only one bar. That’s not enough, not even for Derive.

But to me, it seems that Notations demonstrates your distance from any kind of dogmatism. Would you agree?

Boulez: Yes. Yes, because it’s strongly organized, but it’s free. In none of the works that I compose do I actually look for it, but … if there is an accident – I mean, something which makes me take another route which I did not foresee – then I like it, and I just continue along this "byway". There’s the Mahler quotation again, "the material composes for you." And you have to react to what the material proposes to you, which you have not seen before. And therefore, as I said, this kind of exchange between the material and you is very important. And it’s in this sense that the Notations were important.

Could we say that Notations for orchestra is a kind of  sur Notations? 

Boulez: Yes, it’s exactly that. Exactly that, and I like these superior opportunities; it’s like you’re an archaeologist discovering a civilization – down, down and down. And then you discover yourself, progressively, just like archaeologists discover an old civilization.

Even if it’s not so common for a composer to speak about his own emotions while composing: are there moments of great refreshment when you discover a new dimension in your own work?

Boulez: Yes, certainly. I like this, because sometimes you are confronted with material, and you discover the solution very quickly. That can happen because you are oriented and have been working in that direction. But sometimes you are confronted with material where you just say "what can I do?" – and you sit there with it in front of you, finding absolutely no solutions that are interesting or worth it. And when you do discover a solution, you’re happy and you run with it, certainly. And there are some Notations where I have precise ideas about what I want to do, but have not yet found a way in which to do so, to work with the material in a way that is satisfying to me. But it remains in my head. And sometimes you’re not thinking about it, but rather about something else – perhaps you’re even studying another score, not your own – and suddenly you say "ah!" Now that’s the direction in which you have to go. You know, every moment in your life, if you are creative or in the creative process, can be fruitful. But you have to take the opportunity. And composing is also a matter of seeing the opportunity where other people see nothing. It’s exactly that.

How will you proceed with the Notations?

Boulez:  Well, I am finishing Number Eight for the moment – I have an order in mind. I have finished Number Five in short score, I have to finish Number Eight, I have Number Seven, which I want to modify (there are some questions of balance), and then I will do Six and then the next four pieces – which are longer than the other ones. Number Eight is quite long. And maybe after the last four, it will once again be shorter. I suppose so. That’s my idea for the time being, at least.

I’d like to come back to Derive II. Daniel Barenboim introduced the piece when he conducted it in Berlin, and in his introduction he used sonata-form terms such as "coda", "reprise" and so on. What advice would you give a listener on how to approach this complex music?

Boulez: They have to make their own analysis, and that’s complex. I know I indicated the form which I had in mind. But, you know, I’m not fervent about the form I discovered or used there, because I think the form is stronger than you are – certainly in terms of what you can do until about halfway through the work. You have strict forms, strict rhythmical forms and canonic forms and so on – whatever you want to call them. They are strict forms, or obbligato forms, which are then interrupted more and more by free forms. And you feel that: "A-B-A-B-A-B-A" … it’s always the same alternation, with the interruptions at the beginning being extremely short. They’re barely to be noticed, and then the interruptions grow progressively longer and longer until they become more important than the text itself. After that, things get more complex. I can’t really explain it … again you have the rhythmical structures of the first half, which are very strict. But despite this strictness, they are freer than in the first half. So you have a kind of balance between both halves, and then there’s a long coda. That was how I operated there.

On Incises and sur Incises. You once said that you learned from Gustav Mahler how to construct long forms.

Boulez: Yes.

And especially in sur Incises. Could you explain it?

Boulez: Well, I was always struck by the fact that musicians in general, even including the twelve-tone composers, were tending to compose in smaller forms – even if they were writing things like a symphony, with four movements. The form was already there. But even with Debussy, with La mer, one could say that he onlyused three patterns – with the scherzo in the middle, and a finale, a rondeau more or less, at the end. And that I didn’t like. What I do like is narration: you tell a story – an abstract story, of course, I don’t use sur Incises to describe the sea or anything like that. But it’s still narration. And continuity means not consisting of small bits, but having the elements always there – albeit with variations, making them very differentiated. You cannot compose a long work if you don’t have material that is richer than the material you would use for a small piece. And therefore, in sur Incises, there is material – the first page provides half of the piece, as a matter of fact, because the material is very simple. You have resonant material and quick material. And the process is to mix both of them or not to mix them: at the beginning they are not mixed, and throughout the second half of the piece they are. And then the object is always finding a way to have the dialogue between quick and resonant, that being the material – it plays its novelty each time, and you recognise it, more or less. And that’s a way of composing for me, and I actually do that now – maybe with the orchestration, or notation. I mean, the next Notations. Therefore they are longer, because the story to be told is longer. It’s simply that.

How did you choose the instrumentation for sur Incises? Is it because Bartók had already written something for two pianos and percussion, and Stravinsky something for four pianos?

Boulez: So three pianos puts it in the middle, yes ... but seriously, I must say that I was always quite struck by both works. The Bartók was rarely performed back when I first heard it – I think that was in ‘45 or so – very rarely performed. And I remember that it was two Hungarian pianists. The two percussionists were French; perhaps they couldn’t bring along their percussionists, I’m not sure exactly why. And then there was also a conductor for the piece. They had met something like one day before to rehearse, and it simply cannot be performed just like that. The world première, in Basel, was not conducted – that I know. So the performance that I heard was a rather haphazard one. But I also remember that the sonority was very, very surprising to me. Les Noces, on the other hand, I heard quite a lot and Messiaen was also very fond of it. He was also quite fond of Bartók’s music for two pianos, and thus I’ve known these two pieces for quite a long time. They were part of my culture, practically.

Therefore, when my desire arose to transform Incises into sur Incises – sur Incises was further the last minute. I did not begin with the title, believe me. There was a kind of foundation in Italy which was organising a competition, a piano competition. Pollini was in the jury, as was Berio. And I thought that I might compose a piece for Pollini, a concertante piece for piano and orchestra – or piano and group, I didn’t know exactly. And then when I began to really deal with the material – then I thought: no, that’s not really the way to do it. I would like a piano, a piano with a first shadow and a second shadow. With the piano in the middle, giving his material to both sides. Symmetrical, although this symmetry was more complex than I’m indicating now. At the beginning, however, it wasn’t complex at all. Now at the beginning I wanted to have a sonority to enrich the piano’s sonority, really also to treble the sonority of the piano or repeat the sonority of the piano. So I added the harps, three harps. And then I started on the marimba, because the marimba begins to introduce the quick thematic material. Finally I said to myself that if I have a marimba, I also need a vibraphone for the high register. And then the second vibraphone came at the last minute, because I could not find another instrument in the percussion section capable of matching the vibraphone and the marimba. So I had the vibraphone there, and then I went on to add steel drums, tympani, chimes … and that’s how the percussion is set up: one player on instruments which are totally chromatic, and one on instruments which are, let's say, specialized. So, it came progressively, while I was composing – that was necessary, that was necessary, that was necessary – and I ultimately ended up with three pianos, three harps and three percussionists.

But the pianos remained the principal instruments?

Boulez: The pianos remained the principal instruments, yes. But the other ones grow more and more important as the piece progresses – the sonority of the harp, especially. Not for the quicker movements, of course; there they simply underline the sorority. But in the resonant movements, the harps are certainly very important.

And the harps are extremely powerful, unexpectedly powerful in terms of sound, it seems to me.

Boulez: The harps are very powerful. I don’t like harps the way the French composers handle them – you know

Future performances

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Press reviews

Deutsche Grammophon: Pierre Boulez12 Notations: The concentrated pungency of the sequence embraces whimsical to aggressive, here brought off with total commitment by Pierre-Laurent Aimard, who reveals that each is a gem.

Le Marteau sans maître: the linear and crystalline [piece] seems to meld Debussy and Webern while setting Char’s surrealist prose.

Eclat-Multiples: music that glitters and contains many rhythmic intricacies.

Improvisé – pour le Dr. K.: compelling, whirling and swirling, a touching 80th-birthday present.

Rituel in memoriam Bruno Maderna: a time-obsessed, spatial masterpiece of increasing complexity

Répons: pulsating, colourful and totally engaging – with a sonic shock when the electronics kick in to enlarge the instruments’ dimensions and capability.

Dérive 2: The music’s sheer energy and incident is exhilarating in itself. Playing continuously one might hear Dérive 2 as being in three sections (of roughly 20, 15 and 10 minutes respectively), the middle one being a "slow movement" of alluring fantasy-like reflection. The energetic "first movement" is sustained over many stimulating pages, and the "finale", when reached, is something of an accelerating recapitulation to the full-circle culmination, a return to the horn’s "A" (now augmented) that launches the piece, to close a journey of considerable thrall.

sur Incises: an active and gleaming score, its ideas lucid, their development a rollercoaster of endeavour.

Dialogue de l'ombre double: a fascinating dialogue between a solo clarinettist (Damiens) and his recorded double.

Excerpt from Colin Anderson, classicalsource.com, 9 June 2013

"Pierre Boulez: Complete Works" on Deutsche Grammophon

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