The term neo-romanticism is used to cover a variety of movements in philosophy, literature, music, painting, and architecture, as well as social movements, that exist after and incorporate elements from the era of Romanticism. It has been used with reference to late-19th-century composers such as Richard Wagner particularly by Carl Dahlhaus who describes his music as "a late flowering of romanticism in a positivist age". He regards it as synonymous with "the age of Wagner", from about 1850 until 1890—the start of the era of modernism, whose leading early representatives were Richard Strauss and Gustav Mahler (Dahlhaus 1979, 98–99, 102, 105). It has been applied to writers, painters, and composers who rejected, abandoned, or opposed realism, naturalism, or avant-garde modernism at various points in time from about 1840 down to the present.
Neo-romanticism as well as Romanticism is considered in opposition to naturalism—indeed, so far as music is concerned, naturalism is regarded as alien and even hostile (Dahlhaus 1979, 100). In the period following German unification in 1871, naturalism rejected Romantic literature as a misleading, idealistic distortion of reality. Naturalism in turn came to be regarded as incapable of filling the "void" of modern existence. Critics such as Hermann Bahr, Heinrich Mann, and Eugen Diederichs came to oppose naturalism and materialism under the banner of "neo-romanticism", demanding a cultural reorientation responding to "the soul’s longing for a meaning and content in life" that might replace the fragmentations of modern knowledge with a holistic world view (Kohlenbach 2009, 261).
Neoromanticism in music is a return (at any of several points in the nineteenth or twentieth centuries) to the emotional expression associated with nineteenth-century Romanticism. Since the mid-1970s the term has come to be identified with neoconservative postmodernism, especially in Germany, Austria, and the United States, with composers such as Wolfgang Rihm and George Rochberg. Currently active US-based composers widely described as neoromantic include David Del Tredici and Ellen Taaffe Zwilich (Pasler 2001). Francis Poulenc and Henri Sauguet were French composers considered neoromantic while Virgil Thomson, Nicolas Nabokov, and Douglas Moore were American composers considered neoromantic (Thomson 2002, 268).
Neoromanticism was a term that originated in literary theory in the early 19th century to distinguish later kinds of romanticism from earlier manifestations. In music, it was first used by Richard Wagner in his polemical 1851 article "Oper und Drama", as a disparaging term for the French romanticism of Hector Berlioz and Giacomo Meyerbeer from 1830 onwards, which he regarded as a degenerated form of true romanticism. Ironically, the word came to be used by historians of ideas to refer to music from 1850 onwards, and to the work of Wagner in particular. The designation "neo" was used to acknowledge the fact that music of the second half of the 19th century remained in a romantic mode in an unromantic age, dominated by positivism, when literature and painting had moved on to realism and impressionism (Dahlhaus 1979, 98–99). In the twentieth century, composers such as John Adams and Richard Danielpour have been described as neoromantics (Boone 1983; Hill, Carlin, and Hubbs 2005, 64).