The timbre is somewhat similar to the colors in paintings, but it is not the same, because the colors painted by the painter have an inevitable connection or reference with the colors of the objective things he represents. For example, green is often used for plants and red is used for blood. , sea and sky mostly use blue, etc. Music, on the other hand, expresses abstract objective things and human feelings, lacking specific corresponding references. Therefore, the composer's artistic expression has more personal experience and rich and diverse timbre choices. However, painters have long tried to use concrete colors to express abstract things and emotions. Unfortunately, composers cannot choose a certain tone to express objective things. Perhaps this is precisely the mystery of music. Music expresses a variety of choices of timbre, enriching people's imagination and adding an artistic temperament to the music.