O Melos e Harmonia Acústica (1988) de César Guerra-Peixe, Koellreutter e Hindemith: similaridades e princípios básicos

the melos e harmonia acústica by césar guerra-peixe (1988), presented a survey of the didactical activity of this composer expressed in a textbook form. this research attempts to trace possible influences, comparing it to the craft of musical composition by paul hindemith (1937) and caderno de estudos com koellreutter by guerra-peixe (1944) in order to better understand the technical and theoretical approaches embodied in it.