The Klangforum Wien is an Austrian chamber orchestra, based in Vienna at the Konzerthaus, which specialises in contemporary classical music.
Founded by composer and conductor Beat Furrer in 1985, it is run on collective principles, having no official principal conductor.The group is
often cited as Austria's leading contemporary music ensemble, and is particularly noted for its performances of music by composers of the
German-speaking countries, including Helmut Lachenmann, Wolfgang Rihm, and Hans Zender. - Wiki.