Initiated in 1946 by Wolfgang Steinecke, the Darmstädter Ferienkurse, held annually until 1970 and subsequently every two years, encompass the teaching of both composition and interpretation and also include premières of new works.
All this despite the fact that Boulez never set German texts in his vocal music, choosing for Le marteau sans maître, for example, poems by René Char who, during the war, had been a member of the French Resistance and a Maquis leader in the Basses-Alpes.
In his collected writings, Henze recalls student composers rewriting their works on the train to Darmstadt in order to comply with Boulez's expectations.
[18] One of the leading figures of the Darmstadt School itself, Franco Evangelisti, was also outspoken in his criticism of the dogmatic "orthodoxy" of certain zealot disciples, labelling them the "Dodecaphonic police".
[19] A self-declared member of the school, Konrad Boehmer states: There never was, or has been anything like a 'serial doctrine', an iron law to which all who seek to enter that small chosen band of conspirators must of necessity submit.