The Five Pieces for Orchestra (Fünf Orchesterstücke), Op. 16, were composed by Arnold Schoenberg in 1909, and first performed in London in 1912. The titles of the pieces, reluctantly added by the composer after the work's completion upon the request of his publisher, are as follows: The Five Pieces further develop the notion of "total chromaticism" that Schoenberg introduced in his Three Piano Pieces, Op. 11 (composed earlier that year) and were composed during a time of intense personal and artistic crisis for the composer.

A concerto (; plural concertos, or concerti from the Italian plural) is, from the late Baroque era, mostly understood as an instrumental composition, written for one or more soloists accompanied by an orchestra or other ensemble. The typical three-movement structure, a slow movement (e.g., lento or adagio) preceded and followed by fast movements (e.g., presto or allegro), became a standard from the early 18th century. The concerto originated as a genre of vocal music in the late 16th century: the instrumental variant appeared around a century later, when Italians such as Arcangelo Corelli and Giuseppe Torelli started to publish their concertos. A few decades later, Venetian composers, such as Antonio Vivaldi, had written hundreds of violin concertos, while also producing solo concertos for other instruments such as a cello or a woodwind instrument, and concerti grossi for a group of soloists. The first keyboard concertos, such as George Frideric Handel's organ concertos and Johann Sebastian Bach's harpsichord concertos, were written around the same time. In the second half of the 18th century, the piano became the most used keyboard instrument, and composers of the Classical Era such as Joseph Haydn, Wolfgang Amadeus Mozart and Ludwig van Beethoven each wrote several piano concertos, and, to a lesser extent, violin concertos, and concertos for other instruments. In the Romantic Era, many composers, including Niccolò Paganini, Felix Mendelssohn, Frédéric Chopin, Robert Schumann, Johannes Brahms, Pyotr Ilyich Tchaikovsky and Sergei Rachmaninoff, continued to write solo concertos, and, more exceptionally, concertos for more than one instrument; 19th century concertos for instruments other than the piano, violin and cello remained comparatively rare, however. In the first half of the 20th century, concertos were written by, among others, Maurice Ravel, Edward Elgar, Richard Strauss, Sergei Prokofiev, George Gershwin, Heitor Villa-Lobos, Joaquín Rodrigo and Béla Bartók, the latter also composing a concerto for orchestra, that is without soloist. During the 20th century concertos appeared by major composers for orchestral instruments which had been neglected in the 19th century such as the clarinet, viola and French horn. In the second half of the 20th century and onwards into the 21st a great many composers have continued to write concertos, including Alfred Schnittke, György Ligeti, Dmitri Shostakovich, Philip Glass and James MacMillan among many others. An interesting feature of this period is the proliferation of concerti for less usual instruments, including orchestral ones such as the double bass (by composers like Eduard Tubin or Peter Maxwell Davies) and cor anglais (like those by MacMillan and Aaron Jay Kernis), but also folk instruments (such as Tubin's concerto for Balalaika, Serry's Concerto in C Major for Bassetti Accordion, or the concertos for Harmonica by Villa-Lobos and Malcolm Arnold), and even Deep Purple's Concerto for Group and Orchestra, a concerto for a rock band. Concertos from previous ages have remained a conspicuous part of the repertoire for concert performances and recordings. Less common has been the previously common practice of the composition of concertos by a performer to be performed personally, though the practice has continued via certain composer-performers such as Daniil Trifonov.

The Chamber Symphony No. 1 in E major, Op. 9 (also known by its title in German Kammersymphonie, für 15 soloinstrumente, or simply as Kammersymphonie) is a composition by Austrian composer Arnold Schoenberg. Schoenberg's first chamber symphony was finished in 1906 and premiered on 8 February 1907 in Vienna by the Rosé Quartet together with a wind ensemble from the Vienna Philharmonic, under the composer's baton. In 1913, Schoenberg again conducted the piece, as part of the famed Skandalkonzert, in which the heterodox tonalities of Schoenberg's Symphony and, more so, of his student Alban Berg's works incited the attendees to riot in protest and prematurely end the concert. Leopold Stokowski gave the work its US premiere with the Philadelphia Orchestra on 5 November 1915. The first British performance was on 6 May (or possibly on 16 April) 1921, at the Aeolian Hall, London, conducted by Edward Clark, Schoenberg's champion and former student. The players included Charles Woodhouse (violin), John Barbirolli (cello), Léon Goossens (oboe), Aubrey Brain and Alfred Brain (horns). The piece is a well-known example of the use of quartal harmony.

Chamber Symphony No. 2, Op. 38, by Arnold Schoenberg was begun in 1906 and completed in 1939. The work is scored for 2 flutes (2nd doubling piccolo), 2 oboes (2nd doubling cor anglais), 2 clarinets, 2 bassoons, 2 horns, 2 trumpets and strings, and is divided into two movements, the first (in E-flat minor) marked Adagio and the second (in G major) marked Con Fuoco-Lento. The work's belated completion was prompted by the conductor Fritz Stiedry, who asked Schoenberg for an orchestral piece for his New Friends of Music Orchestra in New York. The work was first performed there on December 14, 1940, under Stiedry's direction. When Schoenberg began the work in 1906, he was on the verge of a major stylistic change. His Chamber Symphony No. 1, for 15 players, has a concise form in which the four movements of a traditional symphony are condensed into a single larger one, and establishes the soloistic orchestral writing sporadically found in works such as Gurre-Lieder and Pelleas und Melisande. After completing it, Schoenberg thought he had reached his mature style, but he soon began to explore new avenues of expression. The Second Chamber Symphony was begun shortly after the first was completed, but despite several efforts (in 1911 and again in 1916), Schoenberg was unable to bring it to a satisfactory conclusion. When he returned to the work 33 years later, it was likely because he felt that his earlier style retained unexplored possibilities. In a letter to Stiedry, Schoenberg addressed the problem of returning to his past: For a month I have been working on the Second Chamber Symphony. I spend most of the time trying to find out ‘What was the author getting at here? Indeed, my style has greatly deepened meanwhile, and I find it hard to reconcile what I then rightly wrote, trusting my sense of form and not thinking too much, with my current extensive demands in respect of ‘visible’ logic. Today that is one of the major difficulties, for it also affects the material. In 1939 he added 20 bars to the original first movement, wrote the latter half of the second movement, and revised and reorchestrated the earlier portions of the work. He considered adding a third movement, an Adagio, and sketched out 127 bars of it, but then decided that the work's musical and ‘psychic’ problems had already been presented thoroughly in the first two movements. He also expanded the ensemble to that of a classical-sized orchestra, with the available forces of Stiedry's orchestra in mind. Compared to the 1906 version, the 1939 version demonstrates greater variety between the string, woodwind and brass sections of the orchestra, using distinct instrumental groupings in a style similar to that of Anton Bruckner. It avoids the doubling of instrumental lines in favor of a differentiation of individual parts, showing that Schoenberg’s later style placed greater emphasis on clarity of textures than did his earlier orchestral scores. In almost every instance in the 1906 draft, first violins are paired with flute, oboe I, and clarinet I, second violins are paired with second clarinet, and lower strings are paired with octave doublings. Harmonically, the Second Chamber Symphony generally progresses by stepwise motion, juxtaposing the First Chamber Symphony’s forward movement through non-traditional suspensions and appoggiaturas. Schoenberg combined this tonal style with 4th chords and similar combinations to grave and severe effect. While the First Chamber Symphony attempts to expand the limits of tonality, the second does not constantly attempt to undermine tonal references. There is debate over what prompted Schoenberg to readmit tonality in pieces such as the Second Chamber Symphony, but his own words are probably the most telling. In his 1948 essay "On revient toujours", he wrote: I was not destined to continue in the manner of Transfigured Night or Gurre-Lieder or even Pelleas and Melisande. The Supreme Commander had ordered me on a harder road. But a longing to return to the older style was always vigorous in me, and from time to time I had to yield to that urge.

The Austrian composer Arnold Schoenberg published four string quartets, distributed over his lifetime: String Quartet No. 1 in D minor, Opus 7 (1905), String Quartet No. 2 in F♯ minor, Op. 10 (1908), String Quartet No. 3, Op. 30 (1927), and the String Quartet No. 4, Op. 37 (1936). In addition to these, he wrote several other works for string quartet which were not published. The most notable was his early String Quartet in D major (1897). There was also a Presto in C major (c. 1895), a Scherzo in F major (1897), and later a Four-part Mirror Canon in A major (c. 1933). Finally, several string quartets exist in fragmentary form. These include String Quartet in F major (before 1897), String Quartet in D minor (1904), String Quartet in C major (after 1904), String Quartet Movement (1926), String Quartet (1926), String Quartet in C major (after 1927) and String Quartet No. 5 (1949). Schoenberg also wrote a Concerto for String Quartet and Orchestra in B♭ major (1933): a recomposition of a work by the Baroque composer George Frideric Handel.

The following is a list of all the compositions by Austrian composer Arnold Schoenberg.

The following is a list of all the compositions by Austrian composer Arnold Schoenberg.

Pelleas und Melisande, Op. 5, is a symphonic poem written by Arnold Schoenberg and completed in February 1903. It was premiered on 25 January 1905 at the Musikverein in Vienna under the composer's direction in a concert that also included the first performance of Alexander von Zemlinsky's Die Seejungfrau. The work is based on Maurice Maeterlinck's play Pelléas and Mélisande, a subject suggested by Richard Strauss. When he began composing the work in 1902, Schoenberg was unaware that Claude Debussy's opera, also based on Maeterlinck's play, was about to premiere in Paris.

Arnold Schoenberg's Piano Concerto, Op. 42 (1942) is one of his later works, written during his exile in the United States. It consists of four interconnected movements: Andante (bars 1–175), Molto allegro (bars 176–263), Adagio (bars 264–329), and Giocoso (bars 330–492). Around 20 minutes long, its first performance was given on February 6, 1944, at NBC Orchestra's Radio City Habitat in New York City by Leopold Stokowski and the NBC Symphony Orchestra with Eduard Steuermann at the piano. The first UK performance was on 7 September 1945 at the BBC Proms with Kyla Greenbaum (piano) conducted by Basil Cameron. The first German performance took place at the Darmstadt Summer School on 17 July 1948 with Peter Stadlen as the soloist.

The Piano Quartet No. 1 in G minor, Op. 25, was composed by Johannes Brahms between 1856 and 1861. It was premiered in 1861 in Hamburg, with Clara Schumann at the piano. It was also played in Vienna on 16 November 1862, with Brahms himself at the piano supported by members of the Hellmesberger Quartet. Like most piano quartets, it is scored for piano, violin, viola, and cello.

The Clavier-Übung III, sometimes referred to as the German Organ Mass, is a collection of compositions for organ by Johann Sebastian Bach, started in 1735–36 and published in 1739. It is considered Bach's most significant and extensive work for organ, containing some of his most musically complex and technically demanding compositions for that instrument. In its use of modal forms, motet-style and canons, it looks back to the religious music of masters of the stile antico, such as Frescobaldi, Palestrina, Lotti and Caldara. At the same time, Bach was forward-looking, incorporating and distilling modern baroque musical forms, such as the French-style chorale. The work has the form of an Organ Mass: between its opening and closing movements—the prelude and "St Anne" fugue in E♭ major, BWV 552—are 21 chorale preludes, BWV 669–689, setting two parts of the Lutheran Mass and six catechism chorales, followed by four duets, BWV 802–805. The chorale preludes range from compositions for single keyboard to a six-part fugal prelude with two parts in the pedal. The purpose of the collection was fourfold: an idealized organ programme, taking as its starting point the organ recitals given by Bach himself in Leipzig; a practical translation of Lutheran doctrine into musical terms for devotional use in the church or the home; a compendium of organ music in all possible styles and idioms, both ancient and modern, and properly internationalised; and as a didactic work presenting examples of all possible forms of contrapuntal composition, going far beyond previous treatises on musical theory.

The following is a list of all the compositions by Austrian composer Arnold Schoenberg.

A string orchestra is an orchestra consisting solely of a string section made up of the bowed strings used in Western Classical music. The instruments of such an orchestra are most often the following: the violin, which is divided into first and second violin players (each usually playing different parts), the viola, the cello, and usually, but not always, the double bass. String orchestras can be of chamber orchestra size ranging from between 12 (4 first violins, 3 second violins, 2 violas, 2 cellos and 1 bass = 12) and 21 musicians (6 first violins, 5 second violins, 4 violas, 4 cellos and 2 double basses= 21) sometimes performing without a conductor. It could also consist of the entire string section of a large symphony orchestra which could have 60 musicians (16 first violins, 14 second violins, 12 violas, 10 cellos and 8 double basses = 60; Gurre-Lieder calls for 84: 20.20.16.16.12).

In music, variation is a formal technique where material is repeated in an altered form. The changes may involve melody, rhythm, harmony, counterpoint, timbre, orchestration or any combination of these. Variation is often contrasted with musical development, which is a slightly different means to the same end. Variation depends upon one type of presentation at a time, while development is carried out upon portions of material treated in many different presentations and combinations at a time.

Variations for Orchestra, Op. 31 (1926–28) is an orchestral set of variations on a theme, composed by Arnold Schoenberg and is his first twelve-tone composition for a large ensemble. Premiered in December 1928 by the Berlin Philharmonic conducted by Wilhelm Furtwängler, it was greeted by a tumultuous scandal.

The Violin Concerto (Op. 36) by Arnold Schoenberg dates from Schoenberg's time in the United States, where he had moved in 1933 to escape Nazi Germany. The piece was written in 1936, the same year as the String Quartet No. 4. At the time of its completion, Schoenberg was living in Brentwood, Los Angeles, and had just accepted a teaching position at the University of California, Los Angeles. The work is dedicated to Anton Webern.