The piano uses the average law, and the string uses the pure law. When the violin and piano are tuned, only the A string is tuned, and the other three strings are tuned in a five-degree relationship. If G, D, A and E are all tuned by the piano, the sound of the violin will be inaccurate. Therefore, when tuning, the violin's A note will generally be tuned higher, so that the other three strings will be closer to the piano. When playing, when the violin is the main theme, you should use pure temperament, which will be nice. When the violin and piano play together, or when they form harmony, the violin must continue to use the average rhythm. "In fact, the piano and stringed instruments are combined, and the more stringed instruments there are, the greater the pitch problem. I remember listening to strings too much, but I always feel uncertain when listening to the piano. Of course, the strings are synchronized with pure melody, but even so, we should pay attention to getting close to each other. " Strings should be able to play all three melodies. When playing a symphony, it is very similar to the principle of string and piano ensemble. When playing harmony, polyphony and modulation, strings must be close to wind music. When strings are the main melody, pure tone melody can be used. "A good band should not only be close to each other in law, but also coordinate with each other in sound, and the stringed instruments should be consistent when kneading strings. At this time, personal superb technology and experience are very important. Of course, command.

Supplement:

The above is the tuning of the empty string. In fact, the basic principle is that the overtones of musical instruments should be harmonious, and discordant and uncomfortable noises should not be produced during ensemble. That is to say, when the sound vibrates, it will produce harmonics of other frequencies (that is, overtones), which must be harmonious, which is the purpose of band tuning.