Composer Anton Webern was an Austrian composer who was a major proponent of the 12-tone technique. He was a member of the Second Viennese School, along with Arnold Schoenberg and Alban Berg, and is considered one of the most important composers of the 20th century. Webern's works are characterized by their brevity and economy of material, and his use of the 12-tone technique was highly influential in the development of modern music.