1. Most of the corridors are paved with tiles, which are smooth and easy to reflect the sound at the top. But usually not smooth walls, the sound will be absorbed by the walls. So singing in the toilet will feel mellow, loud, and have a certain echo, and the effect is good. Like a silver rendering.

2. Psychological influence. There is only one person in the corridor. You sing very relaxed, no one gives you pressure, and at this time you often concentrate on singing, and the environment is very quiet, and you will feel good.

In high school, a friend and I who liked music especially liked the feeling of the bathroom. He even went to the bathroom to record songs.

Let me give you another example: Xidan girl, who was very popular last year, sang ethereal and beautiful, which is related to the rise of underground tunnels. You can't sing that feeling on stage. The corridor is generally closed, so it will sound better than the room and other places, and the sound will not be scattered, and it feels better than the original. Just like singing in the stairwell will sound better, just like why there are no windows in places like the Grand Theatre. .