歌剧音乐必须依靠多种结构力的共同作用,才能完成戏剧表现的重大使命,其中器乐部分核心音型的结构作用非常重要。瞿小松的室内歌剧《命若琴弦》中采用了固定循环出现的“单音音组”、贯穿发展的“希望”动机及变奏式贯穿的“四音音型”,它们在材料、音色、音高组织和戏剧四个方面均形成了结构力。由于它们的共同作用,形成了全剧音乐最重要、最核心的结构力。 Opera music must rely on a variety of structural forces to play a major role in the performance of the drama, including the instrumental part of the structure of the core phonological role is very important. Qu Xiaosong’s indoor opera “Ruoqian string” adopts the “monophonic sound group” that appears in a fixed cycle, which runs through the development of “hope” motivation and the “four-tone type” that the variation style runs through. Pitch organization and theater formed in all four aspects of structural forces. Due to their common function, they formed the most important and core structural force in the whole play.