Anton Webern (born Vienna 3 December 1883; died Mitterill 15 September 1945) was an Austrian composer. Webern and Alban Berg were the most famous pupils of Arnold Schoenberg, the composer who had invented the twelve tone system. This style of composition is often called the “Second Viennese School”. Webern was probably Schoenberg’s first pupil, and Berg joined them a few weeks later. Webern used the rules of the twelve tone system very strictly in his music. His compositions had a lot of influence on composers of the mid-20th century who were interested in serialism, especially Karlheinz Stockhausen and Pierre Boulez. Most of Webern’s compositions are very short.