the Georg Büchner Prize to Fritz Usinger. Concerts presented several world premieres, such as 's string sextet, Fortner's für Klavier, Günter Raphael's sonata for solo flute, a trio for flute, viola and cello by Günter Bialas (1923), Henze's Kranichsteiner Kammerkonzert for flute, piano and strings, and Hölderlin-Lieder by Hermann Reutter. Willy Burkhard's Symphonie in einem Satz (1944) and Hindemith's String Quartet No. 6 (1943) received their first performance in Germany. During the first years of the event, a focus was on German premieres of works, sometimes decades after their composition, by composers such as Arnold Schönberg, Anton Webern, Igor Stravinsky and Béla Bartók. Schoenberg's Piano Concerto was played in 1948, and his String Quartet No. 4 in 1949. That year, a symphony concert was dedicated exclusively to Schoenberg's works, including the German premiere of his Violin Concerto, honouring his 75th birthday. The 70th birthday of Webern was honoured with a concert of his chamber music in 1953. It was the first forum of contemporary music in Germany after World War II, including music theory and philosophy. Lectures were held by instructors such as Theodor W. Adorno, René Leibowitz, Heinz-Klaus Metzger, and later Carl Dahlhaus and Rudolf Stephan, offering critical reflection of advanced composition. Composers such as Edgard Varèse, Olivier Messiaen, Ernst Krenek, Earle Brown and John Cage visited, presenting their work and aesthetic in composition classes, and contributing to worldwide recognition of the institution. Darmstadt School Composers such as, initially, Karlheinz Stockhausen, Pierre Boulez, Luigi Nono, Bruno Maderna, and later Luciano Berio, Aldo Clementi, Franco Donatoni, Niccolò Castiglioni, Franco Evangelisti, Karel Goeyvaerts, Mauricio Kagel, Gottfried Michael Koenig, Giacomo Manzoni, Henri Pousseur, Helmut Lachenmann, and Brian Ferneyhough presented their radical approach and theories. They are sometimes referred to as the "Darmstädter Schule" (Darmstadt School). Notable performers instructed in new playing techniques, and works by young composers (Nachwuchskomponisten) were offered in so-called Atelierkonzerte (atelier concerts). Internationales Musikinstitut Darmstadt For the organisation of the event, the Internationales Musikinstitut Darmstadt was founded in 1948. It also keeps an archive of past events and compositions. It holds around 20,000 photographs, 10,000 letters, sound files and other documents, available online since 2016. The event is sponsored by several organisations, especially public broadcasters. Music prize A prize, the was installed in 1952, first for performers, then also for composers. Recipients include performers (with their instrument listed) and composers: 1952 Karlheinz Zöller (flute) 1955 Marion Zarzeczna (piano) 1957