Joseph Rupert Rudolf Marx (11 May 1882 – 3 September 1964) was an Austrian composer, teacher and critic. He is best known for his 150 lieder, most accompanied by piano, with some scored for orchestra.

Life and career

Marx was born in Graz and pursued studies in philosophy, art history, German studies, and music at Graz University, earning several degrees including a doctorate in 1909. His thesis was an expansion of a 1907 scholarly study of tonality, in which he coined the term "atonality". He began composing seriously in 1908 and over the next four years he produced around 120 songs. In 1914 he joined the faculty of the Vienna Music Academy, later becoming the institution's director in 1922. When the school was reorganized as the Hochschule für Musik in 1924 he was appointed to the position of rector, holding that post for three years. Some of his notable students include Johann Nepomuk David, Richard Flury, Ivana Lang, Alois Melichar, Hisatada Otaka, Florica Racovitză-Flondor, Lucijan Marija Škerjanc, Paul Ulanowsky, Ludovit Rajter, Georg Tintner, Jenő Takács, Kurt Schwertsik, and Clara Wildschut. From 1931 to 1938 he was music critic for the Neues Wiener Journal and following World War II he was critic for the Wiener Zeitung.