Reproducible two-section structure, contrasting two-section structure, primary and secondary two-section structure.

1. Reproducible two-section structure. The song consists of two sections, A and B. The first half of section B has a greater contrast with the melody of section A. The second half of section B reproduces section A. part of the melody.

2. Contrastive two-section structure. The two sections A and B are more contrasting in terms of melody, rhythm, structure, etc. The sound range of section B will increase, the mood will rise, and the melody, rhythm, and The structure, etc. will be different.

3. It has a main and secondary two-part structure. The main song adopts the form of a stanza song, and the melody is different every time the song is performed.