Who was schoenberg influenced by?

Theodor W. Adorno (born Theodor Ludwig Wiesengrund; September 11, 1903 – August 6, 1969), the German sociologist, philosopher and musicologist known for his critical theory of society

Thomas Mann, the German novelist, short story writer, social critic, philanthropist, essayist, and 1929 Nobel Prize laureate, known for his series of highly symbolic and ironic epic novels and novellas

Wilhelm Richard Wagner (22 May 1813 - 13 February 1883), the German composer, conductor, music theorist, and essayist, primarily known for his operas (or "music dramas" as they, the later called)

Otto Weininger (1880-1903), the Austrian writer

Anton Webern (1883-1945), the performer

Johannes Brahms (7 May 1833 3 April 1897), the German composer and pianist, and one of the leading musicians of the Romantic period

Charles Rosen (born May 5, 1862), the American pianist and author on music