 After the student revolts in 1968 , musical life in Germany became highly politicized , and Stockhausen found himself a target for criticism , especially from the leftist camp who wanted music " in the service of the class struggle " . Cornelius Cardew and Konrad Boehmer denounced their former teacher as a " servant of capitalism " . In a climate where music mattered less than political ideology , some critics held that Stockhausen was too élitist , while others complained he was too mystical ( Kurtz 1992 , 188 – 89 ) . 
