音阶,顾名思义就是音乐的阶梯。严格来讲,正如李重光先生在《音乐理论基础》中阐述的:“调式中的音,按照高低次序(上行或下行),由主音到主音排列起来,就叫做音阶”。这种调式音阶包括两方面的内容:一是以何音为主 Scale, as the name suggests is the ladder of music. Strictly speaking, as Li Qiguang states in “The Theory of Musical Theories”: “The tones in the style are arranged from the vocalist to the tonic according to the order (up or down), which is called the scale.” This tone-scale includes two aspects: First, what tone-based