24 Préludes, Op. 28; Préludes Nr. 25, Op. 45; Nr. 26, Op. Posth.

Romanticism in music is a 19th‑century movement that prioritizes individual expression, emotional intensity, and evocative storytelling over the balanced clarity of the Classical era. It expands harmony with richer chromaticism and distant modulations, stretches forms (longer developments, cyclic structures), and favors flexible tempo (rubato) and extreme dynamics. Orchestras grow in size and color (tuba, piccolo, contrabassoon, harp, expanded brass and percussion), while the piano becomes a primary vehicle for intimate expression and virtuoso display. Key genres include the art song (Lied), character piece, symphony and symphonic poem, and grand opera with leitmotifs. Program music—works that narrate scenes, poems, or ideas—stands alongside absolute music, both suffused with heightened subjectivity, nature imagery, nationalism, and the sublime.

Romantic classical (Romantic-era) music is the 19th‑century phase of Western art music in which expression, individuality, and imagination came to the fore. Composers expanded the orchestra, embraced chromatic harmony and bold modulations, and favored long‑breathed, emotive melodies. Aligned with the wider Romantic movement in literature and the arts, it prized the subjective—love, nature, the supernatural, nationalism, and the sublime—often through programmatic narratives. New and transformed genres (the symphonic poem, grand opera, the art song/Lied, concert overtures) coexisted with reimagined Classical forms (symphony, sonata, concerto) that grew in scale and harmonic daring. From ca. 1800 through the early 20th century, Romantic music stretched from Beethoven’s heroic style and Schubert’s lyricism to Wagner’s leitmotivic dramas and Tchaikovsky’s symphonic ballet-infused language, culminating in late-Romantic gigantism and post-Romantic continuations.

A prelude is a short, often improvisatory-sounding instrumental piece that traditionally precedes another work or sets a tonal and expressive atmosphere on its own. Emerging in the early Baroque era from the practice of freely extemporizing before a liturgical or secular performance, the prelude evolved from unmeasured lute and keyboard introductions into highly crafted pieces for organ, harpsichord, and later piano. In the 19th century it became an autonomous character piece (e.g., Chopin’s Op. 28), while in the 20th century composers explored cyclic sets across all keys and a wide range of styles (Debussy, Rachmaninoff, Shostakovich). Despite its brevity and flexibility, the prelude typically establishes a key or mode, a figuration pattern, and a distinct mood, favoring clear tonal focus, continuous flow, and a compelling gesture over strict formal constraints.