Andante is a common musical form and is often used in songs. It includes four parts:

1. Start (Part A): It is usually a short melody to introduce the theme.

2. Development Part (Part B): After Part A, the concert began to enter a more complicated and interesting part. Here, the theme is gradually repeated and changed, and usually some new melodies and harmonies are introduced.

3. The climax (Part C): This part is usually the climax of the whole song and will leave a deep impression on the audience. Part C is usually short, and the theme will be presented in the form of climax.

4. The ending part (part D): After the climax part, the concert returns to the simple part A ... This ending is usually an ending note or a simple little ending.

Generally speaking, Rugao's Andante music structure is very consistent with this structure, with a strong sense of ups and downs and melody, which makes the audience very fascinated.