Why do singers wear headphones in their ears when singing live, as if they were still wearing them? See the figure below.
Opening a concert is very complicated, such as how to get to the channel, the order of songs, how to interact next, what to say and so on. Wearing headphones is to facilitate the behind-the-scenes staff to get in touch with the singer, which can remind the singer well. When singing, you can also be disturbed by slogans and screams that isolate the fans at the scene.