Music does not have semantic meaning, so music cannot directly convey ideas.

Music itself is a language unique to human beings. It cannot be seen or touched. It can only be understood but cannot be expressed in words. It is non-semantic. It is different from the intuitive reflection of the objective world like painting, modeling, and sculpture. Instead, it uses melody, rhythm, harmony, and timbre as the basic means of expression to stimulate people's auditory organs through sound.

This allows people to associate and imagine in their minds and obtain auditory images. In music aesthetics, this kind of imagination and thinking radiates to the maximum extent and in multiple directions, so it has vague and non-semantic characteristics. Non-semanticity in music is compared to language, which is our conventional meaning.

For example, the word "mountain" is used. First of all, we agreed that the meaning of this word refers to the high and protruding landforms we see on the earth, and we call it a mountain. The meaning of this word is the result of our agreement. Music is different in that the meaning it expresses is non-conventional. We cannot give certain accurate information to music through a note or a melody.

The difference between musical vocabulary and general language is that musical vocabulary is three-dimensional, with multiple factors such as harmony and orchestration taking place at the same time, while language is always a single line, even if the ideas are intertwined when writing. Together, but the way of expression can only be a single line.

The musical language we talk about is composed of mode, melody, harmony, texture, musical form, orchestration and other factors. Different combinations have different expressions of artistic conception, so there is ever-changing music. The vocabulary of music develops with the development of human society.