The main melody is piano and keyboard. Piano is also called the "overlord" melody in popular music and is generally played by these two instruments.

Voices and harmony are usually performed with bass, guitar, and drums.

There are also some special songs, such as Wang Leehom's "Hua Tian Cuo" and JAY's "Fa Like Snow", which are classical in style and use ethnic instruments such as the erhu.

Haha, that’s about it. If you still don’t understand, please add me on QQ: 20758826