Many classical and later composers have written compositions in the form of variations on a theme by another composer. This is an incomplete list of such works, sorted by the name of the original composer. The list does not include variations written on composers' own or original themes, or on folk, traditional or anonymous melodies. Many of these works are called simply "Variations on a Theme of/by ...". Other works, which often involve substantial development or transformation of the base material, may have more fanciful titles such as Caprice, Fantasy, Paraphrase, Reminiscences, Rhapsody, etc. These other types of treatments are not listed here unless there is evidence that they include variations on a theme.

Luciano Berio (24 October 1925 – 27 May 2003) was an Italian composer noted for his experimental work (in particular his 1968 composition Sinfonia and Sequenza, a series of solo pieces for instruments using extended techniques), and for his pioneering work in electronic music. His early work was influenced by Igor Stravinsky and experiments with serial and electronic techniques, while his later works explore indeterminacy and the use of spoken texts as the basic material for composition.

List of works by the Italian composer Luciano Berio.

The following is a list of compositions by Johannes Brahms, classified by genre and type of work.

List of works by the Italian composer Luciano Berio.

List of works by the Italian composer Luciano Berio.

Michael Vyner (1943 - 20 October 1989) was an English arts administrator. Formerly employed by the music publishers Schott Music, he was Musical Director of the London Sinfonietta from 1972 until his death in 1989. He was one of the victims of the AIDS epidemic. Vyner's death occasioned a range of musical tributes from some of the major composers of the day, including Hans Werner Henze (Requiem), Luciano Berio (Leaf, for piano), Harrison Birtwistle (Ritual Fragment), Toru Takemitsu (Litany - In Memory of Michael Vyner and My Way of Life - In Memory of Michael Vyner), Peter Maxwell Davies (Threnody on a Plainsong for Michael Vyner), Henryk Górecki (Good Night, In Memoriam Michael Vyner), and Oliver Knussen (Secret Psalm). From 1990 to 2004 there was a Michael Vyner Trust, established to assist young composers and commission new works. Michael Vyner's papers are held by the British Library.

List of works by the Italian composer Luciano Berio.

List of works by the Italian composer Luciano Berio.

Catherine Anahid Berberian (July 4, 1925 – March 6, 1983) was an American mezzo-soprano and composer based in Italy. She worked closely with many contemporary avant-garde music composers, including Luciano Berio, Bruno Maderna, John Cage, Henri Pousseur, Sylvano Bussotti, Darius Milhaud, Roman Haubenstock-Ramati, and Igor Stravinsky. She also interpreted works by Claudio Monteverdi, Heitor Villa-Lobos, Kurt Weill, Philipp zu Eulenburg and others. As a recital curator, she presented several vocal genres in a classical context, including arrangements of songs by the Beatles by Louis Andriessen as well as folk songs from several countries and cultures. As a composer, she wrote Stripsody (1966), in which she exploits her vocal technique using comic book sounds (onomatopoeia), and Morsicat(h)y (1969), a composition for the keyboard (with the right hand only) based on Morse code.

List of works by the Italian composer Luciano Berio.

The Clarinet Sonatas, Op. 120, Nos. 1 and 2, are a pair of works written for clarinet and piano by the Romantic composer Johannes Brahms. They were written in 1894 and are dedicated to the clarinetist Richard Mühlfeld. The sonatas stem from a period late in Brahms's life where he discovered the beauty of the sound and tonal colour of the clarinet. The form of the clarinet sonata was largely undeveloped when Brahms wrote his, after which the combination of clarinet and piano was more readily used in composers’ new works. These were the last chamber pieces Brahms wrote before his death and are considered two of the great masterpieces in the clarinet repertoire. Brahms also produced a frequently performed transcription of these works for viola with alterations to better suit the instrument.

This article lists compositions written for piano duo. The list includes works for piano four-hands and works for two pianos. Catalogue number and date of composition are also included. Ordering is by composer surname. A list of notable performers who played and recorded these works is at List of classical piano duos (performers).

List of works by the Italian composer Luciano Berio.