Underground streets, folk music, cultural exchange and integration, etc.

1. Underground street: Non-mainstream music elements are often ignored by mainstream culture and are an important part of pop music. Underground music, street music, and various types of folk music can all offer unique musical elements and styles.

2. Folk music: Folk music includes various folk music, folk songs, folk songs, etc., with strong local characteristics and national style.

3. Cultural exchange and integration: The raw materials of pop music also come from the exchange and integration between different cultures.