When most people don't know that this song was sung by Hatsune Miku, the first second they hear it, they must think that it was sung by a person.

Most of them think that Hatsune Miku is a human being without knowing that Hatsune Miku is not a real person.

Because in everyone's mind, only people can sing, so when you hear a song in the street, your subconscious will think, who is singing this song? Moreover, Hatsune Miku's synthetic seiyuu singing method only came out in recent years. It seems that Hatsune Miku became popular in 2000, and there was no such singing method before 2000.

Maybe now you think this kind of thing has become commonplace. Some people say that Hatsune Miku is a real person, but you still laugh at him in your heart. However, back to more than a decade ago, this kind of thing was still rare. Naturally, many people misunderstand that the voice is made by a real person, but it is just cute. Besides, the singer's voice is very strange, and there must be people who can make such a sound.