Modernism in music is characterized by a desire for or belief in progress and science, surrealism, anti-romanticism, politicaladvocacy, general intellectualism, and/or a breaking with tradition or common practice. Ezra Pound's modernist slogan, "Make it new," in music. Modern music is often thought to begin with, or just after, Debussy's impressionism, rising to rhetorical, if not commercial, dominance after World War Two, and then being gradually superseded by postmodern music.
Musicologist Carl Dahlhaus restricted his definition of musical modernism to progressive music in the period 1890-1910: "The year 1890...lends itself as an obvious point of historical discontinuity....The "breakthrough" of Mahler, Strauss, and Debussy implies a profound historical transformation....If we were to search for a name to convey the breakaway mood of the 1890's (a mood symbolized musically by the opening bars of Strauss's Don Juan) but without imposing a fictitious unity of style on the age, we could do worse than revert to [the] term "modernism" extending (with some latitude) from the 1890 to the beginnings of our own twentieth-century modern music in 1910....The label "late romanticism"...is a terminological blunder of the first order and ought to be abandoned forthwith. It is absurd to yoke Strauss, Mahler, and the young Schoenberg, composers who represent modernism in the minds of their turn-of-the-century contemporaries, with the self-proclaimed anti-modernist Pfitzner, calling them all "late romantics" in order to supply a veneer of internal unity to an age fraught with stylistic contradictions and conflicts."