"三度间音"的游移性和扩展与延伸

Unsteadiness, Expansion and Extension of Mutation

从广义上说任何一个调式音级当它所处的条件变化时,其音高都会产生微妙的变化。作为调式支柱音时,它暂时处于一种稳定的状态,当条件变化,如上升、下降,作为临时的某调色彩音或在不同情绪的演奏状态下等,它们都会有明显的音高游移性质。一成不变是不可能的,所以音级因态而变的性质是作曲家在刨新和寻找音之根本属性时应该特别关注的重要问题。

Broadly speaking, a pitch will slightly change when the conditions of any scale degree vary. When acts as a supporting pitch, it remains stable. But the pitch of scale degree will be unsteady as the conditions change for example, ascend or descend, or performers' emotion gets instable. It is impossible to remain immutable and only change is the essence of everything. Therefore, the unsteadiness of mutation should be paid special attention when composers try to blaze new trails and find fundamental laws of sound.