The pentatonic scale means that according to the order of five degrees, from Gong Yin to Yu Yin, the order is Gong-Shang-Jiao-Zheng Yin. If arranged in pitch order, it is: 1.2356 Gong Shangjiao (zhǐ) in. "Harmony, division, b, tardiness and fairness" were used in the Tang Dynasty.
China is an ancient civilization with a long history of music development, but ancient music has five tones, which is different from the West. If we compare the seven scales of western music, the pentatonic scale of ancient music in China is equivalent to do, re, mi, sol and la without the "Fa" and "Four" rising semitones.
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Of course, the five-tone roll call of ancient China music can't be the same as that of western music, which used "harmony, si, b, delay and tribute" in the Tang Dynasty; In older times, it used "Gong, Shang, Jiao (pronounced jué), Zheng (pronounced zhǐ) and Yu".
Therefore, if you pay a little attention, there are no two singing names "Fa" and "Si" in authentic China ancient music. For example, Jasmine in Jiangnan minor, which is still heard from time to time, is one of the ancient songs. If the whole song is sung by roll call, it will only be "duo, ho, mi, suo and la", and there are no such famous ancient songs as "Fa" and "xi" at all, and so is "Man Jiang Hong" written by Yue Fei.
China's traditional music theory reveals the connotation of the modern concept "scale" from different angles such as sound, rhythm and sound. In the traditional national mode, there are five kinds of tonic tones that are commonly used, namely, male, upper, angular, positive and Yu, which are equivalent to "duo, heat, mi, sol and la" in the first mode, and are called pentatonic scale. The word "five tones" first appeared in Li Zhou Guan Chun: "All words are written in five tones, and the palace merchants seek feathers." "Five tones" first appeared in Mencius and Li Lou: "Five tones are not correct."
References:
Gong Shang jiao Zheng Yu (China traditional pentatonic scale name) Baidu Encyclopedia