1922, the young Vienna composer E. Wellars participated in the Salzburg international modern chamber music festival and was founded. At that time, there were more than 20 members, including A. von Wei Bain, P. hindemith, B. Bartok, Z. Kodaly, A. Oneg and D. Mi Yue. The association announced that its purpose is to break the restrictions of national boundaries and personal interests, promote modern music, and hold music festivals every year to learn about the music production in the past year. It was seized by the Nazis as a "cultural Bolshevik" during World War II. After the war, he became active again and introduced many masterpieces of modern music. Headquartered in Geneva, many countries have branches.