Giannis Klearchou Xenakis (also spelled for professional purposes as Yannis or Iannis Xenakis; , ; 29 May 1922 – 4 February 2001) was a Romanian-born Greek-French
avant-garde
In the arts and literature, the term ''avant-garde'' ( meaning or ) identifies an experimental genre or work of art, and the artist who created it, which usually is aesthetically innovative, whilst initially being ideologically unacceptable ...
composer,
music theorist
Music theory is the study of theoretical frameworks for understanding the practices and possibilities of music. '' The Oxford Companion to Music'' describes three interrelated uses of the term "music theory": The first is the " rudiments", that ...
, architect, performance director and engineer.
After 1947, he fled Greece, becoming a naturalised
citizen of France eighteen years later. Xenakis pioneered the use of mathematical models in music such as applications of
set theory
Set theory is the branch of mathematical logic that studies Set (mathematics), sets, which can be informally described as collections of objects. Although objects of any kind can be collected into a set, set theory – as a branch of mathema ...
,
stochastic process
In probability theory and related fields, a stochastic () or random process is a mathematical object usually defined as a family of random variables in a probability space, where the index of the family often has the interpretation of time. Sto ...
es and
game theory
Game theory is the study of mathematical models of strategic interactions. It has applications in many fields of social science, and is used extensively in economics, logic, systems science and computer science. Initially, game theory addressed ...
and was also an important influence on the development of
electronic and
computer music. He integrated music with architecture, designing music for pre-existing spaces, and designing spaces to be integrated with specific music compositions and performances.
Among his most important works are ''
Metastaseis'' (1953–54) for orchestra, which introduced independent parts for every musician of the orchestra; percussion works such as ''
Psappha'' (1975) and ''
Pléïades'' (1979); compositions that introduced spatialization by dispersing musicians among the audience, such as ''Terretektorh'' (1966); electronic works created using Xenakis's
UPIC system; and the massive multimedia performances Xenakis called ''polytopes'', that were a summa of his interests and skills.
Among the numerous theoretical writings he authored, the book ''
Formalized Music: Thought and Mathematics in Composition'' (French edition 1963, English translation 1971) is regarded as one of his most important publications. As an architect, Xenakis is primarily known for his early work under
Le Corbusier
Charles-Édouard Jeanneret (6 October 188727 August 1965), known as Le Corbusier ( , ; ), was a Swiss-French architectural designer, painter, urban planner and writer, who was one of the pioneers of what is now regarded as modern architecture ...
: the priory of
Sainte-Marie de La Tourette, on which the two collaborated, and the
Philips Pavilion at the 1958 Brussels World's Fair (
Expo 58
Expo 58, also known as the 1958 Brussels World's Fair (; ), was a world's fair held on the Heysel/Heizel Plateau in Brussels, Belgium, from 17 April to 19 October 1958. It was the first major world's fair registered under the Bureau Internati ...
), which Xenakis designed by himself.
Life
1922–47: early years
Giannis Klearchou Xenakis was born in
Brăila
Brăila (, also , ) is a city in Muntenia, eastern Romania, a port on the Danube and the capital of Brăila County. The Sud-Est (development region), ''Sud-Est'' Regional Development Agency is located in Brăila.
According to the 2021 Romanian ...
,
Romania
Romania is a country located at the crossroads of Central Europe, Central, Eastern Europe, Eastern and Southeast Europe. It borders Ukraine to the north and east, Hungary to the west, Serbia to the southwest, Bulgaria to the south, Moldova to ...
—which at the time had a large
Greek community, as the eldest son of Greek parents; Klearchos Xenakis, a businessman from
Euboea
Euboea ( ; , ), also known by its modern spelling Evia ( ; , ), is the second-largest Greek island in area and population, after Crete, and the sixth largest island in the Mediterranean Sea. It is separated from Boeotia in mainland Greece by ...
who was managing director of an English export-import agency and one of the richest men in the city, and Fotini Pavlou from
Lemnos
Lemnos ( ) or Limnos ( ) is a Greek island in the northern Aegean Sea. Administratively the island forms a separate municipality within the Lemnos (regional unit), Lemnos regional unit, which is part of the North Aegean modern regions of Greece ...
, a pianist who also spoke German and French.
His two younger brothers were
Jason
Jason ( ; ) was an ancient Greek mythological hero and leader of the Argonauts, whose quest for the Golden Fleece is featured in Greek literature. He was the son of Aeson, the rightful king of Iolcos. He was married to the sorceress Med ...
, who became a philosophy professor in the United States and Greece, and , an architect, urban planner and artist.
His parents were both interested in music, and it was Pavlou who encouraged the young child to learn more about it: the young Giannis was given a flute by his mother, and the family visited the
Bayreuth Festival
The Bayreuth Festival () is a music festival held annually in Bayreuth, Germany, at which performances of stage works by the 19th-century German composer Richard Wagner are presented. Wagner himself conceived and promoted the idea of a special ...
several times, due to his father's interest in opera. Her early death in 1927, when Xenakis was five years old, was a traumatic experience that, in his own words, "deeply scarred" the future composer. She had previously been infected from
measles
Measles (probably from Middle Dutch or Middle High German ''masel(e)'', meaning "blemish, blood blister") is a highly contagious, Vaccine-preventable diseases, vaccine-preventable infectious disease caused by Measles morbillivirus, measles v ...
and died after giving birth to a stillborn daughter.
He was subsequently educated by a series of English, French, and German
governess
A governess is a woman employed as a private tutor, who teaches and trains a child or children in their home. A governess often lives in the same residence as the children she is teaching; depending on terms of their employment, they may or ma ...
es, and then, in 1932, sent to Greece to study at the Anargyrio-Korgialenio
boarding school
A boarding school is a school where pupils live within premises while being given formal instruction. The word "boarding" is used in the sense of "room and board", i.e. lodging and meals. They have existed for many centuries, and now extend acr ...
on the Aegean island of
Spetses
Spetses (, "Pityussa") is an island in Attica, Greece. It is counted among the Saronic Islands group. Until 1948, it was part of the old prefecture of Argolis and Corinthia Prefecture, which is now split into Argolis and Corinthia. In ancient ...
.
He excelled in both academics and athletics and sang in the school's boys' choir, where the repertoire included works by
Palestrina
Palestrina (ancient ''Praeneste''; , ''Prainestos'') is a modern Italian city and ''comune'' (municipality) with a population of about 22,000, in Lazio, about east of Rome. It is connected to the latter by the Via Prenestina. It is built upon ...
, and
Mozart
Wolfgang Amadeus Mozart (27 January 1756 – 5 December 1791) was a prolific and influential composer of the Classical period (music), Classical period. Despite his short life, his rapid pace of composition and proficiency from an early age ...
's ''
Requiem
A Requiem (Latin: ''rest'') or Requiem Mass, also known as Mass for the dead () or Mass of the dead (), is a Mass of the Catholic Church offered for the repose of the souls of the deceased, using a particular form of the Roman Missal. It is ...
'', which Xenakis memorized in its entirety.
[ Varga, p. 14.]
It was also at the Spetses school that Xenakis studied
notation
In linguistics and semiotics, a notation system is a system of graphics or symbols, Character_(symbol), characters and abbreviated Expression (language), expressions, used (for example) in Artistic disciplines, artistic and scientific disciplines ...
and
solfège
In music, solfège (British English or American English , ) or solfeggio (; ), also called sol-fa, solfa, solfeo, among many names, is a mnemonic used in teaching aural skills, Pitch (music), pitch and sight-reading of Western classical music, W ...
, being introduced to the music of
Ludwig van Beethoven
Ludwig van Beethoven (baptised 17 December 177026 March 1827) was a German composer and pianist. He is one of the most revered figures in the history of Western music; his works rank among the most performed of the classical music repertoire ...
and
Johannes Brahms
Johannes Brahms (; ; 7 May 1833 – 3 April 1897) was a German composer, virtuoso pianist, and conductor of the mid-Romantic period (music), Romantic period. His music is noted for its rhythmic vitality and freer treatment of dissonance, oft ...
and became enamoured of Greek traditional and church music.
At the same time, he discovered the writer
Homer
Homer (; , ; possibly born ) was an Ancient Greece, Ancient Greek poet who is credited as the author of the ''Iliad'' and the ''Odyssey'', two epic poems that are foundational works of ancient Greek literature. Despite doubts about his autho ...
and had a habit of visiting museums.
In 1938, after graduating from the school, Xenakis moved to
Athens
Athens ( ) is the Capital city, capital and List of cities and towns in Greece, largest city of Greece. A significant coastal urban area in the Mediterranean, Athens is also the capital of the Attica (region), Attica region and is the southe ...
to prepare for entrance exams at its
National Technical University, also studying
Ancient Greek
Ancient Greek (, ; ) includes the forms of the Greek language used in ancient Greece and the classical antiquity, ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Greek ...
. He was encouraged by his friends and family to do so due to his interests in physics and mathematics. Although he intended to study architecture and engineering, he also took lessons in
harmony
In music, harmony is the concept of combining different sounds in order to create new, distinct musical ideas. Theories of harmony seek to describe or explain the effects created by distinct pitches or tones coinciding with one another; harm ...
and
counterpoint
In music theory, counterpoint is the relationship of two or more simultaneous musical lines (also called voices) that are harmonically dependent on each other, yet independent in rhythm and melodic contour. The term originates from the Latin ...
with
Aristotelis Koundouroff. In 1940, he successfully passed the exams, but his studies were cut short by the
Greco-Italian War
The Greco-Italian War (), also called the Italo-Greek War, Italian campaign in Greece, Italian invasion of Greece, and War of '40 in Greece, took place between Italy and Greece from 28 October 1940 to 23 April 1941. This conflict began the Balk ...
, which began with the Italian invasion on 28 October 1940. Although Greece eventually won the war, it was not long before the German army joined the Italians in the
Battle of Greece
The German invasion of Greece or Operation Marita (), were the attacks on Greece by Italy and Germany during World War II. The Italian invasion in October 1940, which is usually known as the Greco-Italian War, was followed by the German invasi ...
, in April 1941.
This led to the
Axis occupation of Greece during World War II, which lasted until late 1944, when the Allies began their drive across Europe, forcing the Axis forces to withdraw. Xenakis joined the
National Liberation Front early during the war, participating in mass protests and demonstrations, and later becoming part of armed resistance — this last step was a painful experience Xenakis refused to discuss until much later in life.
After the Axis forces left, Churchill ordered that British forces step in to help restore the Greek monarchy; they were opposed by the
Democratic Army of Greece
The Democratic Army of Greece (DAG; , ΔΣΕ; ''Dimokratikós Stratós Elládas'', DSE) was the army founded by the Communist Party of Greece during the Greek Civil War (1946–1949). At its height, it had a strength of around 50,000 men and w ...
, and the country plunged into a
civil war
A civil war is a war between organized groups within the same Sovereign state, state (or country). The aim of one side may be to take control of the country or a region, to achieve independence for a region, or to change government policies.J ...
. In December 1944, during the period of
Churchill's
martial law
Martial law is the replacement of civilian government by military rule and the suspension of civilian legal processes for military powers. Martial law can continue for a specified amount of time, or indefinitely, and standard civil liberties ...
, Xenakis (who was by then a member of the communist students' company of the left-wing ''Lord Byron'' faction of
ELAS) became involved in street fighting against British tanks. He was wounded and facially disfigured when shrapnel from a tank blast hit his cheek and left eye, which was blinded;
the fact that Xenakis survived the injury has been described as a miracle.
The Technical University operated intermittently during these years. Despite this, and Xenakis's other activities, he was able to graduate in 1947, with a degree in civil engineering.
Xenakis was then conscripted into the national armed forces. Around 1947 the Greek government began arresting former resistance members that were left-wing oriented and sending them to prison. Xenakis, fearing for his life, went into hiding. With the help of his father and others, he fled Greece through
Italy
Italy, officially the Italian Republic, is a country in Southern Europe, Southern and Western Europe, Western Europe. It consists of Italian Peninsula, a peninsula that extends into the Mediterranean Sea, with the Alps on its northern land b ...
by using a fake
passport
A passport is an official travel document issued by a government that certifies a person's identity and nationality for international travel. A passport allows its bearer to enter and temporarily reside in a foreign country, access local aid ...
. On 11 November 1947 he arrived in Paris. In a late interview, Xenakis admitted to feeling tremendous guilt at leaving his country, and that guilt was one of the sources of his later devotion to music:
For years I was tormented by guilt at having left the country for which I'd fought. I left my friends—some were in prison, others were dead, some managed to escape. I felt I was in debt to them and that I had to repay that debt. And I felt I had a mission. I had to do something important to regain the right to live. It wasn't just a question of music—it was something much more significant.
In the meantime, in Greece he was sentenced
in absentia
''In Absentia'' is the seventh studio album by British progressive rock band Porcupine Tree, first released on 24 September 2002. The album marked several changes for the band, with it being the first with new drummer Gavin Harrison and the f ...
to death by the right-wing administration. The sentence was commuted to ten years' imprisonment in 1951, and only lifted some 23 years later, after the fall of the
Greek junta
The Greek junta or Regime of the Colonels was a Right-wing politics, right-wing military junta that ruled Greece from 1967 to 1974. On 21 April 1967, a group of colonels with CIA backing 1967 Greek coup d'état, overthrew the caretaker gove ...
in 1974. He later returned the same year.
1947–59: architecture and music

Although he was an illegal immigrant in Paris, Xenakis was able to get a job at
Le Corbusier
Charles-Édouard Jeanneret (6 October 188727 August 1965), known as Le Corbusier ( , ; ), was a Swiss-French architectural designer, painter, urban planner and writer, who was one of the pioneers of what is now regarded as modern architecture ...
's architectural studio. He worked as an engineering assistant at first, but quickly rose to performing more important tasks, and eventually to collaborating with Le Corbusier on major projects. These included a kindergarten on the roof of an apartment block in
Nantes
Nantes (, ; ; or ; ) is a city in the Loire-Atlantique department of France on the Loire, from the Atlantic Ocean, Atlantic coast. The city is the List of communes in France with over 20,000 inhabitants, sixth largest in France, with a pop ...
(
Rezé
Rezé (; , Gallo language, Gallo: ''Rezae'') is a Communes of France, commune (municipality) and former bishopric in the Loire-Atlantique Departments of France, department in the Pays de la Loire region of western France. It is a southern suburb ...
), the
Unité d'Habitation of Nantes-Rezé, parts of government buildings in
Chandigarh
Chandigarh is a city and union territory in northern India, serving as the shared capital of the states of Punjab and Haryana. Situated near the foothills of the Shivalik range of Himalayas, it borders Haryana to the east and Punjab in the ...
, India, the "undulatory glass surfaces" of
Sainte Marie de La Tourette, a
Dominican priory
A priory is a monastery of men or women under religious vows that is headed by a prior or prioress. They were created by the Catholic Church. Priories may be monastic houses of monks or nuns (such as the Benedictines, the Cistercians, or t ...
in a valley near
Lyon
Lyon (Franco-Provençal: ''Liyon'') is a city in France. It is located at the confluence of the rivers Rhône and Saône, to the northwest of the French Alps, southeast of Paris, north of Marseille, southwest of Geneva, Switzerland, north ...
, and the
Philips Pavilion at
Expo 58
Expo 58, also known as the 1958 Brussels World's Fair (; ), was a world's fair held on the Heysel/Heizel Plateau in Brussels, Belgium, from 17 April to 19 October 1958. It was the first major world's fair registered under the Bureau Internati ...
—the latter project was completed by Xenakis alone from a basic sketch by Le Corbusier.
Hoffmann
Hoffmann is a German language, German surname.
People A
*Adolph Hoffmann (1858–1930), German politician
*Albert Hoffmann (horticulturist), Albert Hoffmann (1846–1924), German horticulturist
*Alexander Hoffmann (politician), Alexander Hoffma ...
The experience Xenakis gained played a major role in his music: important early compositions such as ''
Metastaseis'' (1953–54) were based directly on architectural concepts. At the same time, he dropped the "G" from his professional name to get the name he is most commonly known by, "Iannis".
At the same time, while working for Le Corbusier, Xenakis was studying harmony and counterpoint, and composing. He worked long and hard, frequently far into the night, and sought guidance from a number of teachers, most of whom, however, ultimately rejected him. Such was the case with
Nadia Boulanger
Juliette Nadia Boulanger (; 16 September 188722 October 1979) was a French music teacher, conductor and composer. She taught many of the leading composers and musicians of the 20th century, and also performed occasionally as a pianist and organis ...
, who was the first person Xenakis approached about lessons. He then tried studying with
Arthur Honegger
Arthur Honegger (; 10 March 1892 – 27 November 1955) was a Swiss-French composer who was born in France and lived a large part of his life in Paris. Honegger was a member of Les Six. For Halbreich, '' Jeanne d'Arc au bûcher'' is "more even ...
, whose reaction to Xenakis's music was unenthusiastic. As Xenakis recounted in a 1987 interview, Honegger dismissed a piece which included
parallel fifths and octaves as "not music". Xenakis, who was by that time well acquainted with music of
Debussy
Achille Claude Debussy (; 22 August 1862 – 25 March 1918) was a French composer. He is sometimes seen as the first Impressionism in music, Impressionist composer, although he vigorously rejected the term. He was among the most influe ...
,
Béla Bartók
Béla Viktor János Bartók (; ; 25 March 1881 – 26 September 1945) was a Hungarian composer, pianist and ethnomusicologist. He is considered one of the most important composers of the 20th century; he and Franz Liszt are regarded as Hunga ...
, and
Stravinsky
Igor Fyodorovich Stravinsky ( – 6 April 1971) was a Russian composer and conductor with French citizenship (from 1934) and American citizenship (from 1945). He is widely considered one of the most important and influential composers of ...
, all of whom used such devices and much more experimental ones, was furious and left to study with
Darius Milhaud
Darius Milhaud (, ; 4 September 1892 – 22 June 1974) was a French composer, conductor, and teacher. He was a member of Les Six—also known as ''The Group of Six''—and one of the most prolific composers of the 20th century. His composition ...
, but these lessons also proved fruitless. Annette Dieudonné, a close friend of Boulanger's, then recommended that Xenakis try studying with
Olivier Messiaen
Olivier Eugène Prosper Charles Messiaen (, ; ; 10 December 1908 – 27 April 1992) was a French composer, organist, and ornithology, ornithologist. One of the major composers of the 20th-century classical music, 20th century, he was also an ou ...
. Xenakis approached Messiaen for advice on whether he once again start studying harmony and counterpoint. Messiaen later recalled:
I understood straight away that he was not someone like the others. ..He is of superior intelligence. ..I did something horrible which I should do with no other student, for I think one should study harmony and counterpoint. But this was a man so much out of the ordinary that I said... No, you are almost thirty, you have the good fortune of being Greek, of being an architect and having studied special mathematics. Take advantage of these things. Do them in your music.
Francisco Estévez has described this work as "mathematical formulas translated . . . into beautiful, exciting, and above all, convincing music."
Xenakis regularly attended Messiaen's classes from 1951 until 1953. Messiaen and his students studied music from a wide range of genres and styles, with particular attention to rhythm. Xenakis's compositions from 1949 until 1952 were mostly inspired by Greek folk melodies, as well as Bartók,
Ravel
Joseph Maurice Ravel (7 March 1875 – 28 December 1937) was a French composer, pianist and conductor. He is often associated with Impressionism in music, Impressionism along with his elder contemporary Claude Debussy, although both composer ...
, and others; after studying with Messiaen, he discovered
serialism
In music, serialism is a method of composition using series of pitches, rhythms, dynamics, timbres or other musical elements. Serialism began primarily with Arnold Schoenberg's twelve-tone technique, though some of his contemporaries were also ...
and gained a deep understanding of contemporary music (Messiaen's other pupils at the time included
Karlheinz Stockhausen
Karlheinz Stockhausen (; 22 August 1928 – 5 December 2007) was a German composer, widely acknowledged by critics as one of the most important but also controversial composers of the 20th and early 21st centuries. He is known for his groun ...
and
Jean Barraqué
Jean-Henri-Alphonse Barraqué (17 January 1928 – 17 August 1973) was a French composer and music writer. His relatively small is known for its serialism.
Life
Barraqué was born in Puteaux, Hauts-de-Seine. In 1931, he moved with his family to P ...
, among others). Messiaen's
modal serialism was an influence on Xenakis's first large-scale work, ''Anastenaria'' (1953–54): a triptych for choir and orchestra based on an ancient
Dionysian
The Apollonian and the Dionysian are philosophical and literary concepts represented by a duality between the figures of Apollo and Dionysus from Greek mythology. Its popularization is widely attributed to the work ''The Birth of Tragedy'' by Fri ...
ritual. The third part of the triptych, ''Metastaseis'', is generally regarded as the composer's first mature piece; it was detached from the triptych to mark the beginning of the "official" Xenakis oeuvre.
He was considered to be part of the
Darmstadt School, but later broke with the group of composers, who he believed focused too heavily on serialism and controlling all aspects of composition. In an article titled “The Crisis of Serial Music” he specifically accused Boulez and Stockhausen of steering music into a dead end.
On 3 December 1953, Xenakis married the journalist and writer
Françoise Gargouïl, whom he met in 1950. Their daughter Mâkhi, who later became a painter and sculptor, was born in 1956 in Paris. In late 1954, with Messiaen's support, Xenakis was accepted into the
Groupe de Recherches de Musique Concrète; an organization established by
Pierre Schaeffer
Pierre Henri Marie Schaeffer (English pronunciation: , ; 14 August 1910 – 19 August 1995) was a French composer, writer, broadcaster, engineer, musicologist, acoustician and founder of Groupe de Recherche de Musique Concrète (GRMC). His inno ...
and
Pierre Henry
Henry at his home (January 2008)
Pierre Georges Albert François Henry (; 9 December 1927 – 5 July 2017) was a French composer known for his significant contributions to musique concrète.
Biography
Henry was born in Paris, France, and bega ...
, dedicated to studying and producing electronic music of the
musique concrète
Musique concrète (; ): " problem for any translator of an academic work in French is that the language is relatively abstract and theoretical compared to English; one might even say that the mode of thinking itself tends to be more schematic ...
variety. Shortly after that Xenakis met conductor
Hermann Scherchen, who was immediately impressed by the score of ''Metastaseis'' and offered his support. Although Scherchen did not premiere that particular work, he did give performances of later pieces by Xenakis, and the relationship between the conductor and the composer was of vital importance for the latter.
By the late 1950s Xenakis slowly started gaining recognition in artistic circles. In 1957, he received his first composition award, from the
European Cultural Foundation, and in 1958 the first official commission came through, from Service de Recherche of
Radio France
Radio France () is the French national public radio broadcaster.
Stations
Radio France offers seven national networks:
*France Inter — Radio France's "generalist media, generalist" station, featuring entertaining and informative talk mixed wi ...
. In the same year, he produced a musique concrète piece, ''
Concret PH'', for the Philips Pavilion. In 1960, Xenakis was well known enough to receive a commission from
UNESCO
The United Nations Educational, Scientific and Cultural Organization (UNESCO ) is a List of specialized agencies of the United Nations, specialized agency of the United Nations (UN) with the aim of promoting world peace and International secur ...
for a soundtrack for a documentary film by Enrico Fulchignoni.
Later life
After leaving Le Corbusier's studio in 1959, Xenakis supported himself by composition and teaching, and quickly became recognized as one of the most important European composers of his time. In 1965, he became a French citizen. He became especially known for his musical research in the field of computer-assisted composition, for which he founded the Equipe de Mathématique et Automatique Musicales (EMAMu) in 1966 (known as CEMAMu: Centre d’Etudes de Mathématique et Automatique Musicales, since 1972). He taught at
Indiana University School of Music from 1967 until 1972 (and established a studio similar to EMAMu there), and worked as visiting professor at the
Sorbonne from 1973 until 1989.
Xenakis frequently lectured (for instance, from 1975 to 1978 he was Professor of Music at
Gresham College
Gresham College is an institution of higher learning located at Barnard's Inn Hall off Holborn in Central London, England that does not accept students or award degrees. It was founded in 1597 under the Will (law), will of Sir Thomas Gresham, ...
, London, giving free public lectures), and teaching composition. His works were performed at numerous festivals worldwide, including the
Shiraz Arts Festival
The Shiraz Festival of Arts (Persian language, Persian: جشنواره هنر شیراز) was an annual international summer arts festival, held in Iran bringing about the encounter between the East and the West. It was held from 1967 to 1977 in ...
in Iran. His notable students include
Pascal Dusapin,
Henning Lohner,
Miguel Ángel Coria, Susan Frykberg, Norma Tyer, Robert Carl, and Julio Estrada (musicologist), Julio Estrada. In 1983, he was elected as a member of the Académie Française.

In addition to composing and teaching, Xenakis also wrote a number of articles and essays on music. Of these, ''Formalized Music'' (1963) became particularly known and was later expanded into a full book. A collection of texts on applications of
stochastic process
In probability theory and related fields, a stochastic () or random process is a mathematical object usually defined as a family of random variables in a probability space, where the index of the family often has the interpretation of time. Sto ...
es, game theory and computer programming in music, it was later revised, expanded and translated into English as ''Formalized Music: Thought and Mathematics in Composition'' (1971) during Xenakis's tenure at Indiana University.
Xenakis was an Atheism, atheist. Polish musicologist Zbigniew Skowron, describing ''Aïs (Xenakis), Aïs'', wrote "In accordance with his atheist views, Xenakis emphasizes the finality of death as the ultimate event of human life, and this is probably why wild shrieks and moans punctuate his score". Xenakis himself wrote, "Man is one, indivisible, and total. He thinks with his belly and feels with his mind. I would like to propose what, to my mind, covers the term "music": ... 7. It is a mystical (but atheistic) asceticism ...".
Xenakis completed his last work, ''O-mega'' for percussion soloist and chamber orchestra, in 1997. His health had been getting progressively worse over the years, and by 1997 he was no longer able to work. In 1999, Xenakis was awarded the Polar Music Prize "for a long succession of forceful works, charged with sensitivity, commitment and passion, through which he has come to rank among the most central composers of our century in the realm of art music, exercising within its various fields an influence which cannot be readily overstated".
After several years of serious illness, on 1 February 2001 the composer lapsed into a coma. He died in his Paris home four days later, on 4 February, aged 78; and was shortly after cremated, with his ashes being given to his family. He was outlived by his wife, who died on 12 February 2018 in Courbevoie, and his daughter.
Works
Specific examples of mathematics, statistics, and physics applied to music composition are the use of the statistical mechanics of gases in ''Pithoprakta'', statistical distribution of points on a plane in ''Diamorphoses'', minimal Constraint (mathematics), constraints in ''Achorripsis'', the normal distribution in ''ST/10'' and ''Atrées'', Markov chains in ''Analogique'',
game theory
Game theory is the study of mathematical models of strategic interactions. It has applications in many fields of social science, and is used extensively in economics, logic, systems science and computer science. Initially, game theory addressed ...
in ''Duel'', ''Stratégie'', and ''Linaia-agon'', group theory in ''Nomos Alpha'' (for Siegfried Palm),
set theory
Set theory is the branch of mathematical logic that studies Set (mathematics), sets, which can be informally described as collections of objects. Although objects of any kind can be collected into a set, set theory – as a branch of mathema ...
in ''Herma'' and ''Eonta'', and Brownian motion in ''N'Shima''. ''Persephassa'', commissioned by the Shiraz Arts Festival, was performed by Les Percussions de Strasbourg, receiving its world premiere in Persepolis in 1969. Subsequently, he was once again commissioned by the Shiraz Arts Festival and composed ''Persepolis'' for the occasion, a "polytope" composed specific to the historic site.
Although Electroacoustic music, electroacoustic compositions represent only a small fraction of Xenakis's output, they are highly relevant to musical thinking in the late 20th century. Important works in this medium include ''
Concret PH'' (1958), ''Analogique B'' (1958–59), ''Bohor (Xenakis), Bohor'' (1962), ''La légende d'Eer'' (1977), ''Mycenae-Alpha'' (1978), ''Voyage absolu des Unari vers Andromède'' (1989), ''Gendy301'' (1991), and ''S709'' (1994).
By 1979, he had devised a computer system called
UPIC, which could translate graphical images into musical results. "Xenakis had originally trained as an architect, so some of his drawings, which he called 'arborescences', resembled both organic forms and architectural structures." These drawings' various curves and lines that could be interpreted by UPIC as real time instructions for the sound synthesis process. The drawing is, thus, rendered into a composition. ''Mycenae-Alpha'' was the first of these pieces he created using UPIC as it was being perfected.
Xenakis also developed a stochastic synthesizer algorithm (used in GENDY), called ''dynamic stochastic synthesis'', where a polygonal waveform's sectional borders' amplitudes and distance between borders may be generated using a form of random walk to create both aleatoric timbres and musical forms.
[#Serra, Serra, 241.] Further material may be generated by then refeeding the original waveform back into the function or wave forms may be superimposed. Elastic barriers or mirrors are used to keep the randomly generated values within a given finite interval, so as to not exceed limits such as the audible pitch range, avoid complete chaos (white noise), and to create a balance between stability and instability (unity and variety).
Despite Xenakis's reputation as a "mathematical" composer, his works are known for their power and physicality. Alex Ross (music critic), Alex Ross wrote that Xenakis "produced some of the rawest, wildest music in history—sounds that explode around the ears. Rarefied methods were employed to release primordial energies." Ben Watson (music writer), Ben Watson expressed admiration for the "terrifying emotional impact of [Xenakis'] sonic objectivity", describing his music as possessing "truly majestic otherness. It is an alien shard, glimmering in the heart of the West."
Tom Service praised Xenakis' music for its "shattering visceral power" and "sheer, scintillating physicality", noting its "deep, primal rootedness in richer and older phenomena even than musical history: the physics and patterning of the natural world, of the stars, of gas molecules, and the proliferating possibilities of mathematical principles."
Service described Xenakis as a composer "whose craggily, joyously elemental music turned collections of pitches and rhythms and instruments into a force of nature, releasing a power that previous composers had only suggested metaphorically but which he would realise with arguably greater clarity, ferocity, intensity than any musician, before or since," and suggested that his music is "expressive: not in a conventionally emotional way, perhaps, but it has an ecstatic, cathartic power. Xenakis's music – and its preternaturally brilliant performers – allows its listeners to witness seismic events close at hand, to be at the middle of a musical happening of cosmic intensity."
Service concluded: "it took Xenakis for music to become nature. On holiday in Corsica, Xenakis would pilot his canoe into the teeth of the biggest storm he and his paddle could manage. When you're listening to his music, you also go out there into the eye of a musical storm that will invigorate, inspire, and awe. See you out there..."
Writings
* Xenakis, Iannis. 2001. ''
Formalized Music: Thought and Mathematics in Composition'' (Harmonologia Series No. 6). Hillsdale, New York: Pendragon Press.
Notes
References
Cited sources
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Further reading
* Amagali, Rosemary Tristano. (1975). "Texture as an Organizational Factor in Selected Works of Iannis Xenakis". M.M. Thesis, Indiana University.
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* Bardot, Jean-Marc. (1999). "Cendrées de Xenakis ou l'émergence de la vocalité dans la pensée xenakienne." Undergraduate thesis (equivalent). Saint-Etienne: Université Jean Monnet.
* Biasi, Salvatore di. (1994). ''Musica e matematica negli anni 50–60: Iannis Xenakis''. Bologna. Università degli Studi di Bologna.
* Boivin, Jean. 1995. ''La Classe de Messiaen''. Paris: Christian Bourgois.
* Clark, Philip. (2009). "Xenakis", in ''The Wire Primers: A Guide To Modern Music'', 191–198. London and New York: Verso. .
* Dimitri Kitsikis, Kitsikis, Dimitri. (2014). Περί Ηρώων: Οι ήρωες και η σημασία τους για τον σύγχρονο ελληνισμό (On Heroes.: Heroes and Their Importance for Contemporary Hellenism). Athens: Herodotos. (Chapter "Iannis Xenakis: Souvenirs from Paris, by D. Kitsikis, Xenakis's Intimate Friend").
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* Paland, Ralph, and Christoph von Blumröder (eds.). (2009). ''Iannis Xenakis: Das elektroakustische Werk. Internationales Symposion. Tagungsbericht 2006''. Signale aus Köln. Beiträge zur Musik der Zeit 14. Vienna. Der Apfel. .
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* Woodward, Roger (2014). "Iannis Xenakis". ''Beyond Black and White''. HarperCollins. pp. 353–399.
Obituaries
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External links
xenakis.musicportal.grfrom the Institute for Research on Music and Acoustics, Athens (Greece) – in Greek and English with many score and audio examples
Iannis-Xenakis.orgby the Friends of Xenakis
Luque, Sergio. 2009. "The Stochastic Synthesis of Iannis Xenakis." Leonardo Music Journal (19): 77–84Works catalogue70-page PDF from Xenakis's publisher Éditions Durand-Salabert-Eschig
Iannis Xenakis @ Boosey & Hawkes Publisherby Markos Zografos
compiled by James Harley for Leonardo, The International Society of the Arts, Sciences and Technology, Leonardo/ISAST
* Two articles by Grant Chu Covell (2006) documenting then-recent Xenakis recordings and books about Xenakis
Part 1an
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25 March 1997
{{DEFAULTSORT:Xenakis, Iannis
1922 births
2001 deaths
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Kyoto laureates in Arts and Philosophy
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