(1) The paper discussed the essential features of polytonality counterpoint from various visual angles, as well as its developing skeleton and principle of writing.

(2) For a polytonality work, it seems there exist a certain inner relations among each other, such as close relative keys, keys with the same tonic.

(3) Bolcom uses a lot of Latin America music materials in Recuerdos, and also applied contemporary compositional technique to this work, such as polytonality , serialism, collage, etc.

(4) By the late 1940s, he was already employing modern classical ideas such as polytonality and dissonance, and working in unusual time signatures to create a distinctive jazz sound.

(5) Their prominent peculiarity is that they are symmetrical in structure and polytonality in line.

(6) The writer thought that the meaning of tonalities with alike bass in fact had been a logic relations for polytonality.

(7) With the individual music style, the work combined exoticism with creation method of polytonality.