Resulting in part from the libertarian and egalitarian ideals of the French Revolution, the romantic movements had in common only a revolt against the prescribed rules of classicism. The basic aims of romanticism were various: a return to nature and to belief in the goodness of humanity; the rediscovery of the artist as a supremely individual creator; the development of nationalistic pride; and the exaltation of the senses and emotions over reason and intellect. In addition, romanticism was a philosophical revolt against rationalism.

In the visual arts romanticism is used to refer loosely to a trend that appears at any time, and specifically to the art of the early 19th cent. Nineteenth-century romanticism was characterized by the avoidance of classical forms and rules, emphasis on the emotional and spiritual, representation of the unattainable ideal, nostalgia for the grace of past ages, and a predilection for exotic themes.

Romantic artists developed precise techniques in order to produce specific associations in the mind of the viewer. To convey verbal concepts they would, for example, endow inanimate objects with human values (e.g., the wild trees and shimmery moonlight used in the paintings of Caspar David Friedrich to suggest an infinity of human longing, the weltschmerz of his time). The result was often sentimental or ludicrous. In the case of Delacroix, however, his painterly style and color sense exalted the romantic attitude in a singularly effective fashion.

In England landscape gardening was used to express the romantic aesthetic by means of deliberate imitation of the picturesque in nature. In architecture Wyatt's preposterous, mock medieval Fonthill Abbey displayed the romantic building style in extreme form. The host of lesser artists of the romantic tradition included the French Géricault, the Swiss-English Henry Fuseli, the Swiss Arnold Böcklin, the English Pre-Raphaelites, the German Nazarenes, and the American artists of the Hudson River school.

Romanticism in music was characterized by an emphasis on emotion and great freedom of form. It attained its fullest development in the works of German composers. Although elements of romanticism are present in the music of Beethoven, Weber, and Schubert, it reached its zenith in the works of Berlioz, Mendelssohn, Schumann, Chopin, Liszt, and Wagner. Less totally romantic composers usually placed in the middle period of romanticism are Brahms, Tchaikovsky, Dvořák, and Grieg; those grouped in the last phase include Elgar, Puccini, Mahler, Richard Strauss, and Sibelius.

Many romantic composers, including Mendelssohn, Schumann, Chopin, and Brahms, worked in small forms that are flexible in structure, e.g., prelude, intermezzo, nocturne, ballad, and cappriccio, especially in solo music for the piano. Another romantic contribution was the art song for voice and piano, most notably the German lied (see song). Romantic composers, particularly Liszt, in combining music and literature, created the symphonic poem. Berlioz also made use of literature; much of his work is described as program music. Romantic opera began with Weber, included the works of the Italians Rossini, Bellini, Donizetti, and Verdi, and culminated in the work of Wagner, who aimed at a complete synthesis of the arts in his idea of Gesamtkunstwerk [total work of art].

While Tchaikovsky was inspired by a more universal romanticism, the movement in Russia was nationalist in nature, exemplified by the works of Mikhail Glinka. The music of the Czech composers Bedřich Smetana and Dvořák and that of the Norwegian composer Grieg also expressed romantic nationalism. Toward the end of the 19th cent. interest in classical forms was revived by Bruckner, Brahms, Tchaikovsky, and Franck. The end of the romantic period—frequently described as decadent and grandiose—is often referred to as postromanticism and is represented by the works of Holst, Elgar, Mahler, and Richard Strauss.