music Music is the arrangement of sound to create some combination of Musical form, form, harmony, melody, rhythm, or otherwise Musical expression, expressive content. Music is generally agreed to be a cultural universal that is present in all hum ...

, a subject is the material, usually a recognizable

melody A melody (), also tune, voice, or line, is a linear succession of musical tones that the listener perceives as a single entity. In its most literal sense, a melody is a combination of Pitch (music), pitch and rhythm, while more figurativel ...

, upon which part or all of a

composition Composition or Compositions may refer to: Arts and literature *Composition (dance), practice and teaching of choreography * Composition (language), in literature and rhetoric, producing a work in spoken tradition and written discourse, to include ...

is based. In forms other than the

fugue In classical music, a fugue (, from Latin ''fuga'', meaning "flight" or "escape""Fugue, ''n''." ''The Concise Oxford English Dictionary'', eleventh edition, revised, ed. Catherine Soanes and Angus Stevenson (Oxford and New York: Oxford Universit ...

, this may be known as the theme.

Characteristics

A subject may be perceivable as a complete musical expression in itself, separate from the work in which it is found. In contrast to an idea or motif, a subject is usually a complete

phrase In grammar, a phrasecalled expression in some contextsis a group of words or singular word acting as a grammatical unit. For instance, the English language, English expression "the very happy squirrel" is a noun phrase which contains the adject ...

or period. The ''Encyclopédie Fasquelle'' defines a theme (subject) as " y element, motif, or small musical piece that has given rise to some variation becomes thereby a theme". Thematic changes and processes are often structurally important, and theorists such as Rudolph Reti have created analysis from a purely thematic perspective.

Fred Lerdahl Alfred Whitford (Fred) Lerdahl (born March 10, 1943) is an American music theorist and composer. Best known for his work on musical grammar, Music cognition, cognition, Rhythm, rhythmic theory, and pitch space, he and the linguist Ray Jackendoff d ...

describes thematic relations as "associational" and thus outside his cognitive-based generative theory's scope of analysis.

In different types of music

Music based on a single theme is called monothematic, while music based on several themes is called polythematic. Most

s are monothematic and most pieces in

sonata form The sonata form (also sonata-allegro form or first movement form) is a musical form, musical structure generally consisting of three main sections: an exposition, a development, and a recapitulation. It has been used widely since the middle of t ...

are polythematic. In the

exposition Exposition (also the French for exhibition) may refer to: *Universal exposition or World's Fair *Expository writing *Exposition (narrative), background information in a story * Exposition (music) *Trade fair * ''Exposition'' (album), the debut alb ...

of a fugue, the principal theme (usually called the subject) is announced successively in each

voice The human voice consists of sound made by a human being using the vocal tract, including talking, singing, laughing, crying, screaming, shouting, humming or yelling. The human voice frequency is specifically a part of human sound produ ...

– sometimes in a transposed form. In some compositions, a principal subject is announced and then a second

, sometimes called a countersubject or secondary theme, may occur. When one of the sections in the exposition of a sonata-form movement consists of several themes or other material, defined by function and (usually) their tonality, rather than by melodic characteristics alone, the term theme group (or subject group) is sometimes used. Music without subjects/themes, or without recognizable, repeating, and developing subjects/themes, is called athematic. Examples include the pre-

twelve-tone The twelve-tone technique—also known as dodecaphony, twelve-tone serialism, and (in British usage) twelve-note composition—is a method of musical composition. The technique is a means of ensuring that all 12 notes of the chromatic scale ...

or early

atonal Atonality in its broadest sense is music that lacks a tonal center, or key. ''Atonality'', in this sense, usually describes compositions written from about the early 20th-century to the present day, where a hierarchy of harmonies focusing on ...

works of

Arnold Schoenberg Arnold Schoenberg or Schönberg (13 September 187413 July 1951) was an Austrian and American composer, music theorist, teacher and writer. He was among the first Modernism (music), modernists who transformed the practice of harmony in 20th-centu ...

Anton Webern Anton Webern (; 3 December 1883 – 15 September 1945) was an Austrian composer, conductor, and musicologist. His music was among the most radical of its milieu in its lyric poetry, lyrical, poetic concision and use of then novel atonality, aton ...

Alban Berg Alban Maria Johannes Berg ( ; ; 9 February 1885 – 24 December 1935) was an Austrian composer of the Second Viennese School. His compositional style combined Romantic lyricism with the twelve-tone technique. Although he left a relatively sma ...

, and

Alois Hába Alois Hába (21 June 1893 – 18 November 1973) was a Czech composer, music theorist and teacher. He belongs to the important discoverers in modern classical music, and to the major composers of microtonal music, especially using the quarter-to ...

. Schoenberg once said that, "intoxicated by the enthusiasm of having freed music from the shackles of tonality, I had thought to find further liberty of expression. In fact, I … believed that now music could renounce motivic features and remain coherent and comprehensible nevertheless". Examples by Schoenberg include ''

Erwartung ' (''Expectation''), Op. 17, is a one-act monodrama in four scenes by Arnold Schoenberg to a libretto by . Composed in 1909, it was not premiered until 6 June 1924 in Prague conducted by Alexander Zemlinsky with Marie Gutheil-Schoder as the sop ...

''. Examples in the works of later composers include ''

Polyphonie X ''Polyphonie X'' (1950–51) is a three- movement composition by Pierre Boulez for eighteen instruments divided into seven groups, with a duration of roughly fifteen minutes. Following the work's premiere, Boulez withdrew the score, stating that it ...

'' and '' Structures I'' by

Pierre Boulez Pierre Louis Joseph Boulez (; 26 March 19255 January 2016) was a French composer, conductor and writer, and the founder of several musical institutions. He was one of the dominant figures of post-war contemporary classical music. Born in Montb ...

, Sonata for Two Pianos by

Karel Goeyvaerts Karel August Goeyvaerts (8 June 1923 – 3 February 1993) was a Belgian composer. Life Goeyvaerts was born in Antwerp, where he studied at the Royal Flemish Music Conservatory; he later studied composition in Paris with Darius Milhaud and analysi ...

, and '' Punkte'' by

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 ...

Countersubject

In a

, when the first voice has completed the subject, and the second voice is playing the answer, the first voice usually continues by playing a new theme that is called the 'countersubject'. The countersubject usually contrasts with the subject/answer phrase shape. In a fugue, a countersubject is "the continuation of

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 ...

in the

that began with the subject", occurring against the answer. It is not usually regarded as an essential feature of fugue, however. The typical fugue opening resembles the following: Soprano voice: Answer Alto voice: Subject Countersubject Since a countersubject may be used both above and below the answer, countersubjects are usually

invertible In mathematics, the concept of an inverse element generalises the concepts of opposite () and reciprocal () of numbers. Given an operation denoted here , and an identity element denoted , if , one says that is a left inverse of , and that ...

, all perfect fifths inverting to perfect fourths which required resolution.

References

Sources * * * * * * * * * * * * *

Characteristics

In different types of music

Countersubject

See also

References

Further reading