Franz Schreker (originally Schrecker; 23 March 1878 – 21 March 1934) was an Austrian composer, conductor, teacher and administrator. Primarily a composer of operas, Schreker developed a style characterized by aesthetic plurality (a mixture of Romanticism, Naturalism, Symbolism, Impressionism, Expressionism and Neue Sachlichkeit), timbral experimentation, strategies of extended tonality and conception of total music theatre into the narrative of 20th-century music.