The following is a complete list of compositions by Carl Maria von Weber in order of both opus number and catalogue number. A complete chronological catalogue of Weber's works was compiled by Friedrich Wilhelm Jähns and published in 1871. Catalogue numbers are indicated by a preceding "J."

Frédéric François Chopin (born Fryderyk Franciszek Chopin; 1 March 1810 – 17 October 1849) was a Polish composer and virtuoso pianist of the Romantic period who wrote primarily for solo piano. He has maintained worldwide renown as a leading composer of his era whose "poetic genius was based on a professional technique that was without equal in his generation". Chopin was born in Żelazowa Wola and grew up in Warsaw, which in 1815 became part of Congress Poland. A child prodigy, he completed his musical education and composed his early works in Warsaw before leaving Poland at age 20, less than a month before the outbreak of the November 1830 Uprising; at 21, he settled in Paris. Thereafter he gave only 30 public performances, preferring the more intimate atmosphere of the salon. He supported himself by selling his compositions and giving piano lessons, for which he was in high demand. Chopin formed a friendship with Franz Liszt and was admired by many musical contemporaries, including Robert Schumann. After a failed engagement to Maria Wodzińska from 1836 to 1837, he maintained an often troubled relationship with the French writer Aurore Dupin (known by her pen name George Sand). A brief and unhappy visit to Mallorca with Sand in 1838–39 proved one of his most productive periods of composition. In his final years he was supported financially by his admirer Jane Stirling. In poor health most of his life, Chopin died in Paris in 1849 at age 39. All of Chopin's compositions feature the piano. Most are for solo piano, though he also wrote two piano concertos before leaving Warsaw, some chamber music, and 19 songs set to Polish lyrics. His piano pieces are technically demanding and expanded the limits of the instrument; his own performances were noted for their nuance and sensitivity. Chopin's major piano works include mazurkas, waltzes, nocturnes, polonaises, the instrumental ballade (which Chopin created as an instrumental genre), études, impromptus, scherzi, preludes, and sonatas, some published only posthumously. Among the influences on his style of composition were Polish folk music, the classical tradition of Mozart and Schubert, and the atmosphere of the Paris salons, of which he was a frequent guest. His innovations in style, harmony, and musical form, and his association of music with nationalism, were influential throughout and after the late Romantic period. Chopin's music, his status as one of music's earliest celebrities, his indirect association with political insurrection, his high-profile love life, and his early death have made him a leading symbol of the Romantic era. His works remain popular, and he has been the subject of numerous films and biographies of varying historical fidelity. Among his many memorials is the Fryderyk Chopin Institute, which was created by the Polish parliament to research and promote his life and works, and which hosts the prestigious International Chopin Piano Competition, devoted entirely to his works.

Johannes Brahms (; German: [joˈhanəs ˈbʁaːms] ; 7 May 1833 – 3 April 1897) was a German composer, virtuoso pianist, and conductor of the mid-Romantic period. His music is noted for its rhythmic vitality and freer treatment of dissonance, often set within studied yet expressive contrapuntal textures. He adapted the traditional structures and techniques of a wide historical range of earlier composers. His œuvre includes four symphonies, four concertos, a Requiem, much chamber music, and hundreds of folk-song arrangements and Lieder, among other works for symphony orchestra, piano, organ, and choir. Born to a musical family in Hamburg, Brahms began composing and concertizing locally in his youth. He toured Central Europe as a pianist in his adulthood, premiering many of his own works and meeting Franz Liszt in Weimar. Brahms worked with Ede Reményi and Joseph Joachim, seeking Robert Schumann's approval through Joachim. He gained both Robert and Clara Schumann's support and guidance. Brahms stayed with Clara in Düsseldorf, becoming devoted to her amid Robert's insanity and institutionalization. The two remained close, lifelong friends after Robert's death. Brahms never married, perhaps in an effort to focus on his work as a musician and scholar. He was a self-conscious, sometimes severely self-critical composer. Though innovative, his music was considered relatively conservative within the polarized context of the War of the Romantics, an affair in which Brahms regretted his public involvement. His compositions were largely successful, attracting a growing circle of supporters, friends, and musicians. Eduard Hanslick celebrated them polemically as absolute music, and Hans von Bülow even cast Brahms as the successor of Johann Sebastian Bach and Ludwig van Beethoven, an idea Richard Wagner mocked. Settling in Vienna, Brahms conducted the Singakademie and Gesellschaft der Musikfreunde, programming the early and often "serious" music of his personal studies. He considered retiring from composition late in life but continued to write chamber music, especially for Richard Mühlfeld. Brahms's contributions and craftsmanship were admired by his contemporaries like Antonín Dvořák, whose music he enthusiastically supported, and a variety of later composers. Max Reger and Alexander Zemlinsky reconciled Brahms's and Wagner's often contrasted styles. So did Arnold Schoenberg, who emphasized Brahms's "progressive" side. He and Anton Webern were inspired by the intricate structural coherence of Brahms's music, including what Schoenberg termed its developing variation. It remains a staple of the concert repertoire, continuing to influence composers into the 21st century.

William Southcombe Lloyd Webber (11 March 1914 – 29 October 1982) was an English organist and composer, who achieved some fame as a part of the modern classical music movement whilst commercially facing mixed opportunities. Besides his long and prestigious career, composing works ranging from choral pieces to instrumental items and more, he is known for being the father of his fellow composer Andrew Lloyd Webber and the cellist Julian Lloyd Webber. He also served as a teacher, instructing pupils in music theory at the Royal College of Music for many years until his death in 1982.

The Grand Duo Concertant, Opus 48, J204, is a three-movement work for clarinet and piano composed by Carl Maria von Weber from 1815 to 1816. It is a virtuosic piece for both instruments. Weber most likely composed the work for himself (on piano) and his friend Heinrich Baermann, a leading clarinettist of the era, although it has also been suggested that the intended clarinettist was Johann Simon Hermstedt. The three movements are as follows: Allegro con fuoco Andante con moto Rondo: allegro The second and third movements were completed before the first and were probably performed in 1815 for King Maximilian I Joseph of Bavaria at the Nymphenburg Palace. During its composition, Weber designated the work as a sonata, but abandoned that title upon its completion. This decision reflected the work's character as more of a showcase for two virtuosos than a conventionally structured and integrated work. The first movement is in sonata form, the second movement is an Andante in C minor, and the finale is a lilting rondo in E-flat major. The British music critic John Warrack suggests the work could be referred to as a "double concerto without orchestra", reflecting the highly virtuosic roles for both performers. The autograph manuscript of the work is preserved in the Library of Congress.

A piano quartet is a chamber music composition for piano and three other instruments, or a musical ensemble comprising such instruments. Those other instruments are usually a string trio consisting of a violin, viola and cello. Piano quartets for that standard lineup were written by Wolfgang Amadeus Mozart, Robert Schumann, Ludwig van Beethoven, Johannes Brahms, Antonín Dvořák and Gabriel Fauré among others. In the 20th century, composers have also written for more varied groups, with Anton Webern's Quartet, opus 22 (1930), for example, being for piano, violin, clarinet and tenor saxophone, and Paul Hindemith's quartet (1938) as well as Olivier Messiaen's Quatuor pour la fin du temps (1940) both for piano, violin, cello and clarinet. An early example of this can be found in Franz Berwald's quartet for piano, horn, clarinet and bassoon from 1819, his opus 1. A rare form of piano quartets consist of two pianos with two players at each piano. This type of ensemble is informally referred to as "eight-hand piano", or "two piano eight hands". Eight-hand piano was popular in the late 19th century before the advent of recordings as it was a mechanism to reproduce and study symphonic works. Music lovers could hear the major symphonic works all in the convenience of a parlour or music hall that had two pianos and four pianists. Many of the popular works of Mozart, Schumann, Brahms and Dvořák were transcribed for two piano eight hands. The majority of 8 hand piano music consists of transcriptions, or arrangements.

Trio for Piano, Flute and Cello in G minor, Op. 63, J. 259 was composed by Carl Maria von Weber in 1818–1819 and published the next year. It is the only piano trio he ever wrote, albeit scored for flute rather than the more conventional violin, and is one of his most substantial chamber pieces. A typical performance lasts 21-25 min.