1. According to the structural relationship between phrases in a paragraph, it can be divided into square paragraphs and non-square paragraphs.

2. According to the thematic relationship between phrases in a paragraph, it can be divided into parallel paragraphs (also called repeated paragraphs and combined paragraphs), modular paragraphs and contrast paragraphs.

3. According to tonality and ending harmony, it can be divided into monotonicity, open structure and tone sandhi.

4. Starting from the middle termination (semi-termination) of a piece of music, it can be divided into various kinds of music with different harmony.

Meaning of a paragraph: It is the smallest structure that constitutes an independent paragraph. The length of a paragraph depends on the speed, beat and genre of the work.

The characteristics of this article:

1. Paragraph is the smallest structure to express complete or relatively complete musical ideas in musical works, and it is the smallest complete musical form based on a single theme.

2. The part of a paragraph is a phrase, which is separated from each other through the termination form and combined into an organic musical structure through the functional relationship of the termination form.

3. A paragraph is often composed of several phrases, and there is a question-and-answer relationship. It is common for two or four phrases to form a paragraph, but there are also three, five or more phrases, or a single phrase.

4. In the melodic music style, the expression of harmony plays an important role in the presentation, development and end of musical ideas. So the successful termination of harmony and melody is a typical sign of the end of a paragraph. A piece of music can end in the initial tonality, or it can end in the complete termination of relative tonality or other tonality, which is called a modulation piece.

Generally speaking, the scale of music fragments is not too large, but the form is complete and unified, which can reflect the distinctive music image. Since music clips are usually the original statements of the theme, most statements of music clips are indicative.

6. A piece of music can be used as a form of independent music or as a part of a larger work. As an independent work (especially instrumental music), a piece of music is generally more complicated than a piece of music. This is because in independent works, the music part not only has the theme statement, consolidation and ending, but also develops to a certain extent, even on a large scale.