Luciano Berio, Cavaliere di Gran Croce OMRI (October 24, 1925 – May 27, 2003) was an Italian composer. He is noted for his experimental work (in particular his 1968 composition Sinfonia for voices and orchestra and his series of numbered solo pieces titled Sequenza) and also for his pioneering work in electronic music.

Berio was born at Oneglia (now part of Imperia). He was taught the piano by his father and grandfather who were both organists. During World War II he was conscripted into the army, but on his first day he injured his hand while learning how a gun worked, and spent time in a military hospital. Following the war, Berio studied at the Milan Conservatory under Giulio Cesare Paribeni and Giorgio Federico Ghedini. He was unable to continue studying the piano because of his injured hand, so instead concentrated on composition. In 1947 came the first public performance of one of his works, a suite for piano. Berio made a living at this time accompanying singing classes, and it was in doing this that he met American mezzo-soprano Cathy Berberian, whom he married shortly after graduating (they divorced in 1964). Berio would write many pieces aimed at exploiting her very distinctive voice.

In 1951, Berio went to the United States to study with Luigi Dallapiccola at Tanglewood, from whom he gained an interest in serialism. He later attended the Internationale Ferienkurse für Neue Musik at Darmstadt, meeting Pierre Boulez, Karlheinz Stockhausen, György Ligeti and Mauricio Kagel there. He became interested in electronic music, co-founding the Studio di Fonologia, an electronic music studio in Milan, with Bruno Maderna in 1955. He invited a number of significant composers to work there, among them Henri Pousseur and John Cage. He also produced an electronic music periodical, Incontri Musicali.

In 1960, Berio returned to Tanglewood, this time as Composer in Residence, and in 1962, on an invitation from Darius Milhaud, took a teaching post at Mills College in Oakland, California. In 1965 he began to teach at the Juilliard School, and there he founded the Juilliard Ensemble, a group dedicated to performances of contemporary music. In 1966, he again married, this time to the noted philosopher of science Susan Oyama (they divorced in 1972). His students included Louis Andriessen, Steven Gellman, Steve Reich, Luca Francesconi, Giulio Castagnoli and Phil Lesh of the Grateful Dead.

All this time Berio had been steadily composing and building a reputation, winning the Italian Prize in 1966 for Laborintus II. His reputation was cemented when his Sinfonia was premiered in 1968. In 1972, Berio returned to Italy. From 1974–80 he acted as director of the electro-acoustic division of IRCAM in Paris, and in 1977 he married for the third time with musicologist Talia Pecker. In 1987 he opened Tempo Reale, a centre for musical research and production based in Florence. In 1988 he was made an Honorary Member of the Royal Academy of Music, London. In 1989 he received the Ernst von Siemens Music Prize. He was elected a Foreign Honorary Member of the American Academy of Arts and Sciences in 1994. The same year, he became Distinguished Composer in Residence at Harvard University, remaining there until 2000. He was also active as a conductor and continued to compose to the end of his life. In 2000, he became Presidente and Sovrintendente at the Accademia Nazionale di Santa Cecilia in Rome. Luciano Berio died in 2003 in a hospital in Rome.

Berio's electronic work dates for the most part from his time at Milan's Studio di Fonologia. One of the most influential works he produced there was Thema (Omaggio a Joyce) (1958), based on Cathy Berberian reading from James Joyce's Ulysses, which can be considered as the first electro-acoustic composition in the history of western music made with voice and elaboration of it by technological means. A later work, Visage (1961) sees Berio creating a wordless emotional language by cutting up and rearranging a recording of Cathy Berberian's voice; therefore the composition is based on the symbolic and representative charge of gestures and voice inflections, “from inarticulate sounds to syllables, from laughter to tears and singing, from aphasia to inflection patterns from specific languages: English and Italian, Hebrew and the Neapolitan dialect."

In 1968, Berio completed O King a work which exists in two versions: one for voice, flute, clarinet, violin, cello and piano, the other for eight voices and orchestra. The piece is in memory of Martin Luther King, who had been assassinated shortly before its composition. In it, the voice(s) intones first the vowels, and then the consonants which make up his name, only stringing them together to give his name in full in the final bars.

The orchestral version of O King was, shortly after its completion, integrated into what is perhaps Berio's most famous work, Sinfonia (1967–69), for orchestra and eight amplified voices. The voices are not used in a traditional classical way; they frequently do not sing at all, but speak, whisper and shout. The third movement is a collage of literary and musical quotations. A-Ronne (1974) is similarly collaged, but with the focus more squarely on the voice. It was originally written as a radio program for five actors, and reworked in 1975 for eight vocalists and an optional keyboard part. The work is one of a number of collaborations with the poet Edoardo Sanguineti, who for this piece provided a text full of quotations from sources including the Bible, T. S. Eliot and Karl Marx.

Another example of the influence of Sanguineti is the large work Coro, scored for orchestra, solo voices, and a large choir, whose members are paired with instruments of the orchestra. The work extends over roughly an hour, and explores a number of themes within a framework of folk music from a variety of regions: Chile, North America, Africa. Recurrent themes are the expression of love and passion; the pain of being parted from loved ones; death of a wife or husband. A line repeated often is "come and see the blood on the streets", a reference to a poem by Pablo Neruda, written in the context of savage events in Latin America under various military regimes.

Together with another 11 composer-friends (C. Beck, L. Berio, P. Boulez, B. Britten, H. Dutilleux, W. Fortner, A. Ginastera, C. Halffter, H. W. Henze, H. Holliger, K. Huber and W. Lutoslawski) of Paul Sacher, he was asked by Russian cellist Mstislav Rostropovich on Sacher's 70th birthday to write composition for cello solo with use of notes creating his name (eS, A, C, H, E, Re). Berio composed piece Les mots sont alles. Compositions were partially presented in Zurich on 2nd May 1976. The whole "eSACHERe" project will be (for the first time in complete performance by one cellist) performed by Czech Cellist František Brikcius in 2011 in Prague.

Berio is known for adapting and transforming the music of others, but he also adapted his own compositions: the series of Sequenze gave rise to a series of works called Chemins each based on one of the Sequenze. Chemins II (1967), for instance, takes the original Sequenza VI (1967) for viola and adapts it for solo viola and nine other instruments. Chemins II was itself transformed into Chemins III (1968) by the addition of an orchestra, and there also exists Chemins IIb, a version of Chemins II without the solo viola but with a larger ensemble, and Chemins IIc, which is Chemins IIb with an added solo bass clarinet. The Sequenze were also shaped into new works under titles other than Chemins; Corale (1981), for example, is based on Sequenza VIII.

As well as original works, Berio made a number of arrangements of works by other composers, among them Claudio Monteverdi, Henry Purcell, Johannes Brahms, Gustav Mahler and Kurt Weill. For Berberian he wrote Folk Songs (1964; a set of arrangements of folk songs). He also wrote an ending for Giacomo Puccini's opera Turandot (premiered in Las Palmas on 24 January 2002 and in the same year in Los Angeles, Amsterdam and Salzburg) and in Rendering (1989) took the few sketches Franz Schubert made for his Symphony No. 10, and completed them by adding music derived from other Schubert works.

Transcription is a vital part of even Berio's "creative" works. In "Two Interviews," Berio mused about what a college course in transcription would look like, looking not only at Franz Liszt, Ferruccio Busoni, Igor Stravinsky, Johann Sebastian Bach, himself, and others, but to what extent composition is always self-transcription. In this respect, Berio rejected and distanced himself from notions of "collage," preferring instead the position of "transcriber," arguing that "collage" implies a certain arbitrary abandon that runs counter to the careful control of his highly intellectual play, especially within Sinfonia but throughout his "deconstructive" works. Rather, each quotation carefully evokes the context of its original work, creating an open web, but an open web with highly specific referents and a vigorously defined, if self-proliferating, signifier-signified relationship. "I'm not interested in collages, and they amuse me only when I'm doing them with my children: then they become an exercise in relativizing and 'decontextualizing' images, an elementary exercise whose healthy cynicism won't do anyone any harm," Berio told interviewer Rossana Dalmonte.

Perhaps Berio's most notable contribution to the world of post-WWII non-serial experimental music, running throughout most of his works, is his engagement with the broader world of critical theory (epitomized by his life-long friendship with linguist and critical theorist Umberto Eco) through his compositions. Berio's works are often analytic acts: deliberately analyzing myths, stories, the components of words themselves, his own compositions, or preexisting musical works. In other words, it is not only the composition of the "collage" that conveys meaning; it is the particular composition of the component "sound-image" that conveys meaning, even extra-musical meaning. The technique of the "collage," that he is associated with, is, then, less a neutral process than a conscious, Joycean process of analysis-by-composition, a form of analytic transcription of which Sinfonia and The Chemins are the most prominent examples. Berio often offers his compositions as forms of academic or cultural discourse themselves rather than as "mere" fodder for them.

Among Berio's other compositions are Circles (1960), Sequenza III (1966), and Recital I (for Cathy) (1972), all written for Berberian, and a number of stage works, with Un re in ascolto, a collaboration with Italo Calvino, the best known.

Berio's "central instrumental focus", if such a thing exists, is probably with the voice, the piano, the flute, and the strings. He wrote many remarkable pieces for piano which vary from solo pieces to essentially concerto pieces (points on the curve to find, concerto for two pianos, and Coro, which has a strong backbone of harmonic and melodic material entirely based on the piano part).

Lesser known works make use of a very distinguishable polyphony unique to Berio that develops in a variety of ways. This occurs in several works, but most recognizably in compositions for small instrumental combinations. Examples are Différences, for flute, harp, clarinet, cello, violin and electronic sounds, Agnus, for three clarinets and voices, Tempi concertanti for flute and four instrumental groups, Linea, for marimba, Vibraphone, and two pianos, and Chemins IV, for eleven strings and oboe.