Description:

I want to know the origin of seven tones (DO,RE,MI,FA,SOL,LA,SI) in music and what they stand for. Also, why can such rich music be expressed by using these seven sounds in the music language? In China's ancient music, five tones are enough.

Analysis:

China's pentatonic scale is derived from the principle of "five-degree interaction", which is calculated according to the vibration of different lengths of strings, that is, taking C (palace) as the root sound, and counting up to 5 degrees and 5 degrees, the order is C (palace) -G (sign) -D (quotient) -A (feather) -E (angle), and it is calculated. Later, a mathematician (who can't remember the name of the Qing Dynasty) worked out 12 equal divisions within an octave with a very complicated method, so China's "Twelve Tones" appeared. Later, it developed from pentatonic scale to hexatonic scale and heptatonic scale. The six-tone scale is to add the sixth tone on the basis of the five-tone scale. One * * * has four tones: F (clearing the angle), F-sharp (inflection), B-flat (leap) and B-flat. Seven tones are also added to two of these four tones, but after being added, they have their own modal names: Gong, Shang, Jiao, Qing Jiao, Zheng, Yu and Bian Gong are called Qingle; Palace, business, horn, sign change, sign, feather and palace change are called elegant music; Gong, Shang, Jiao, Qing, Zheng, Yu and Leap are called Yanle. (All of the above are based on the C key.)

The 12-tone system was discovered in Europe more than 3, years later than that in China. The earliest European musicians often had to constantly tune their strings when performing, so they often strung the strings because they didn't find any disharmony. It was not until later that someone discovered this problem, so there was a 12-tone system in Europe.

Because the basic mode system of China and foreign music is different, China has a pentatonic scale, while foreign music has a 12-tone system. Moreover, the harmony between the two systems is not the same at all, which makes us know whether it is China music or foreign music immediately when we hear music. The seven tones spoken by the master are just the most basic tones in the mode. In fact, there are various inflections, and based on the 12-tone theory, the tonality transformation is very flexible, so the limited tones can express such rich music.

the answer is very confusing, hehe, I hope the cuddler can understand.