A concerto is a musical composition typically written for one or more solo instruments accompanied by an orchestra. Originating in the Baroque period, it evolved through the Classical and Romantic eras into a featured form showcasing virtuosity and dialogue between soloist and ensemble. Standard concertos usually consist of three movements (fast–slow–fast) and often include a cadenza—a passage of improvisatory flourish—near the end of the first movement.
1 History
1.1 Baroque concerto
The Baroque concerto emerged in the late 17th century, primarily in Italy, as a genre that contrasted a small group of instruments (the concertino) against a larger ensemble (the ripieno or tutti). This opposition of forces became the defining feature of the early concerto.
1.1.1 Ritornello form
Ritornello form, characteristic of the Baroque concerto, alternates between a recurring tutti passage (the ritornello) and solo episodes. The ritornello, played by the full orchestra, returns in various keys, while the soloist presents contrasting material, often more virtuosic. This structure provided both unity and variety, allowing the soloist to shine against a stable orchestral framework.
1.1.2 Concerto grosso vs. solo concerto
Two main subtypes developed: the concerto grosso, which pits a small group of soloists (concertino) against the full orchestra, and the solo concerto, featuring a single solo instrument. Arcangelo Corelli’s *Concerti Grossi*, Op. 6 (1714) exemplify the former, while Antonio Vivaldi’s hundreds of solo concertos—especially his violin concertos—popularized the latter. Vivaldi’s *The Four Seasons* (c. 1723) are among the most famous Baroque solo concertos.
1.2 Classical concerto
In the Classical era (c. 1750–1820), the concerto underwent significant formal refinement. Composers such as Wolfgang Amadeus Mozart and Joseph Haydn standardized the three-movement structure and integrated the soloist more deeply into the orchestral fabric.
1.2.1 Double exposition form
Classical concertos often employ double exposition form in the first movement. The orchestra first presents the primary themes (orchestral exposition); then the soloist enters and repeats or elaborates upon those themes (solo exposition). This dual presentation heightens the drama of the soloist’s arrival and establishes a clear dialogue.
1.2.2 Development of the cadenza
The cadenza—a virtuosic, often improvisatory passage near the end of the first movement—became a standard feature during the Classical period. Originally improvised by the performer, it typically appears on a sustained chord (usually the I⁶₄) before the final orchestral ritornello. Mozart and Beethoven began writing out cadenzas for their own performances, ensuring stylistic coherence.
1.3 Romantic concerto
The Romantic era (c. 1820–1910) transformed the concerto into a vehicle for heightened emotional expression and technical display. Composers expanded the orchestra, extended movements, and blurred the boundaries between soloist and ensemble.
1.3.1 Virtuosic display and symphonic integration
Romantic concertos emphasize both bravura solo writing and symphonic depth. The soloist’s part often requires extreme technical facility, as seen in Pyotr Ilyich Tchaikovsky’s Piano Concerto No. 1 (1875) and Niccolò Paganini’s violin concertos. At the same time, composers like Johannes Brahms and Robert Schumann treated the orchestra as an equal partner, weaving thematic material through both forces. The single-movement “concert piece” (e.g., Franz Liszt’s *Totentanz*) also gained popularity.
1.4 20th century and contemporary approaches
Twentieth‑ and twenty‑first‑century composers have expanded the concerto’s boundaries. Neoclassical works (Igor Stravinsky’s *Dumbarton Oaks*), serialism (Arnold Schoenberg’s Piano Concerto), and experimental techniques (John Cage’s prepared‑piano concertos) all appear. The *Concerto for Orchestra*—pitting the entire ensemble against itself—became a distinct genre (e.g., Béla Bartók, 1943). Some contemporary composers incorporate electronics, multimedia, or non‑Western instruments, ensuring the concerto remains a living form.
2 Structure and form
2.1 Three-movement plan
The standard concerto follows a fast–slow–fast three‑movement plan, though deviations occur.
2.1.1 First movement: sonata form with orchestral exposition
The first movement is usually in sonata form, with an orchestral exposition (or double exposition) that establishes the main themes. Development and recapitulation feature extensive dialogue between soloist and orchestra, culminating in a cadenza before the coda.
2.1.2 Second movement: slow and lyrical
The second movement provides contrast, often in a slower tempo (e.g., adagio, andante) with a lyrical melody that showcases the soloist’s expressive abilities. Forms may include ternary (ABA), theme and variations, or free rhapsodic design.
2.1.3 Third movement: rondo or sonata‑rondo
The finale is typically lively and energetic, often in rondo form (ABACA) or sonata‑rondo. It may incorporate dance rhythms, folk elements, or brilliant passagework, bringing the concerto to an exuberant close.
2.2 Cadenza
2.2.1 Written vs. improvised cadenzas
Cadenzas may be either improvised by the performer or composed by the composer or another arranger. In the Classical period, improvisation was expected; Mozart and Beethoven provided written cadenzas for some works but left others open. By the Romantic era, most composers wrote out the cadenza to ensure stylistic unity, though some performers still add their own. In modern practice, both options are common, with written cadenzas often adhering to traditional harmonic frameworks.
2.3 Orchestration and texture
The concerto’s texture balances soloist and orchestra. Typically, the orchestra supports without overpowering the solo, though tuttis may be massive. Orchestration highlights the soloist’s timbre—e.g., woodwinds often double or echo the solo line. The use of orchestral instruments can also create contrast, as when the soloist is accompanied only by strings or reduced forces.
3 Types of concertos
3.1 Solo concerto
The solo concerto features a single instrument with orchestral accompaniment. It is the most common type.
3.1.1 Piano concerto
The piano concerto is the most frequently performed solo concerto, with a vast repertoire from Mozart to modern composers. Its ability to produce both melody and full harmony makes it a natural vehicle for orchestral dialogue.
3.1.2 Violin concerto
The violin concerto showcases the instrument’s agility and singing tone. Notable examples include those by Beethoven, Mendelssohn, Tchaikovsky, and Sibelius.
3.1.3 Other solo instruments
Concertos exist for nearly every orchestral instrument: cello (Dvořák, Shostakovich), clarinet (Mozart, Nielsen), flute (Vivaldi, Ibert), horn (Mozart, Strauss), and even harp (Debussy, Ginastera). Some instruments—such as the bassoon or viola—have smaller but distinguished repertoires.
3.2 Multiple-soloist concertos
Works for more than one soloist expand the dialogue to chamber‑music‑like interplay.
3.2.1 Double concerto
A double concerto features two soloists, often of the same instrument (e.g., two violins) or different ones (e.g., violin and cello). Bach’s Double Violin Concerto and Brahms’s Double Concerto for violin and cello are celebrated examples.
3.2.2 Triple concerto
A triple concerto, with three soloists, appears less frequently. Beethoven’s Triple Concerto (piano, violin, cello) is the best‑known, while modern works like Robert Schumann’s *Konzertstück* for four horns also exist.
3.3 Concerto for orchestra
The concerto for orchestra treats the orchestra itself as a soloistic ensemble, with individual sections or players taking turns in virtuosic passages. Bartók’s *Concerto for Orchestra* is the iconic example; others include those by Lutosławski, Hindemith, and Kodály.
3.4 Vocal or choral concerto
Although less common, vocal or choral concertos feature a solo voice or choir with orchestra. Examples include certain Baroque sacred concertos (e.g., Bach’s “Jauchzet Gott in allen Landen”) and modern works like John Adams’s *El Niño* or choral pieces with instrumental interludes.
4 Notable composers and representative works
4.1 Baroque era
4.1.1 Antonio Vivaldi (The Four Seasons)
Antonio Vivaldi (1678–1741) composed over 500 concertos, including *The Four Seasons* (c. 1723). These four violin concertos programmatically depict spring, summer, autumn, and winter through vivid musical imagery (bird calls, storms, dances), each accompanied by a sonnet. Vivaldi’s use of ritornello form and rhythmic vitality established the solo concerto’s Baroque archetype.
4.1.2 Johann Sebastian Bach (Brandenburg Concertos)
Johann Sebastian Bach’s *Brandenburg Concertos* (BWV 1046–1051, dedicated 1721) are the pinnacle of the concerto grosso. Each concerto uses a different set of solo instruments: e.g., No. 2 (trumpet, recorder, oboe, violin), No. 3 (three violins, three violas, three cellos). Bach expands the genre with contrapuntal complexity and harmonic depth.
4.2 Classical era
4.2.1 Wolfgang Amadeus Mozart (Piano Concerto No. 21)
Mozart (1756–1791) composed 27 piano concertos, among the greatest achievements of the Classical concerto. Piano Concerto No. 21 in C major (K. 467, 1785) features a lyrical, elegant second movement (the “Elvira Madigan” theme) and a brilliant finale. Mozart’s integration of piano and orchestra set a new standard for balance and drama.
4.2.2 Ludwig van Beethoven (Violin Concerto)
Beethoven’s Violin Concerto in D major, Op. 61 (1806) is a monumental work, expanding the concerto’s scope with its long orchestral exposition, serene lyricism, and innovative cadenza (written for timpani in the piano transcription). It bridges the Classical and Romantic eras.
4.3 Romantic era
4.3.1 Pyotr Ilyich Tchaikovsky (Piano Concerto No. 1)
Tchaikovsky’s Piano Concerto No. 1 in B‑flat minor, Op. 23 (1875) opens with an iconic, sweeping theme. Its combination of Russian folk‑inflected melodies, orchestral grandeur, and demanding piano writing makes it a favorite in the concert hall.
4.3.2 Johannes Brahms (Violin Concerto)
Brahms’s Violin Concerto in D major, Op. 77 (1878) is noted for its symphonic integration of solo and orchestra. The first movement’s expansive sonata form, the oboe‑led adagio, and the fiery Hungarian‑inspired finale exhibit Brahms’s mastery.
4.3.3 Sergei Rachmaninoff (Piano Concerto No. 2)
Rachmaninoff’s Piano Concerto No. 2 in C minor, Op. 18 (1901) is a cornerstone of the Romantic piano concerto. Its lush harmonies, memorable themes (especially the opening bell‑like chords and the soaring second‑movement melody), and virtuosic demands ensured its enduring popularity.
4.4 Modern and contemporary
4.4.1 Béla Bartók (Concerto for Orchestra)
Bartók’s *Concerto for Orchestra*, Sz. 116 (1943) transforms the orchestral sections into soloists. The five‑movement work features playful dialogues (e.g., the “Game of Pairs” in the second movement) and an elegiac fourth movement, concluding with a virtuosic finale. It is a landmark of 20th‑century orchestral music.
4.4.2 Dmitri Shostakovich (Cello Concerto No. 1)
Shostakovich’s Cello Concerto No. 1 in E‑flat major, Op. 107 (1959) is a dark, agile work. Its recurring motto theme, sardonic scherzo, and haunting slow movement, followed by a cadenza that leads into the finale, highlight both the cello’s lyricism and percussive power.
5 Performance practice
5.1 Role of the conductor
The conductor coordinates the dialogue between soloist and orchestra, balancing dynamics, tempos, and phrasing. In concertos, the conductor often must follow the soloist’s expressive choices while maintaining orchestral cohesion. Many concertos have no conductor (especially Baroque works performed with a small ensemble), but in modern orchestral settings, the conductor is essential.
5.2 Soloist‑orchestra interaction
The relationship between soloist and orchestra is one of partnership and rivalry. The soloist may lead with a theme, then be echoed or challenged by the orchestra. In performance, the soloist often cues the orchestra during pauses or at the start of movements. Non‑verbal communication—eye contact, breathing, gesture—is crucial for synchronization, especially in cadenza endings.
5.3 Cadenza improvisation traditions
Until the late 19th century, cadenzas were often improvised. Some performers wrote their own, while others relied on standard published versions. In the 20th century, improvisation declined except among specialist performers (e.g., baroque or jazz‑influenced pianists). Today, many soloists learn composed cadenzas, but a few still improvise—particularly in historically informed performances. The tradition lives on in some contemporary works that explicitly invite improvisatory passages.
6 Cultural significance and legacy
The concerto has been a central genre in Western classical music for over three centuries. It embodies the ideal of individual virtuosity balanced with collective artistry, often mirroring broader cultural tensions between the soloist (as hero or outsider) and society (the orchestra). Concerti are staples of the concert repertoire, with major concertos drawing large audiences and serving as career milestones for performers.
Beyond the concert hall, concerto forms have influenced film scores, jazz (e.g., Gershwin’s *Rhapsody in Blue*), and popular music (e.g., progressive rock’s use of orchestral solos). The genre’s adaptability ensures its continued relevance; new concertos are commissioned and premiered worldwide, exploring contemporary sounds and cultural contexts. As a showcase for both technical prowess and expressive depth, the concerto remains a testament to the enduring power of musical dialogue.