 Some of these ideas , considered from a purely theoretical point of view ( divorced from their context as explanations of particular compositions ) drew significant critical fire ( Backus 1962 , Fokker 1968 , Perle 1960 ) . For this reason , Stockhausen ceased publishing such articles for a number of years , as he felt that " many useless polemics " about these texts had arisen , and he preferred to concentrate his attention on composing ( Stockhausen Texte , 4 : 13 ) . 
