this kind of music has an obvious characteristic, that is, it is performed in the form of "one call at a time" similar to China folk songs, which is called "Call and Reponse" in English. At first, phrases will give people a feeling of nervousness, crying and helplessness, and then the following phrases will be like comforting and relieving the suffering people. It's like a suffering person crying to God, and then being comforted and responded by God!