Why do so many kpop groups have an "order" that they prefer to sing in or tend to stick to?

I think it's because their voices fit specific parts and bring out the best of them, so they're in charge of it.

Like Twice Sana and SKZ Felix usually get the "killing points" of the songs (Shy shy shy, Cooking like a chef I'm a five star Michelin) because they have very unique and quirky voices.

Another example is members such as Twice Nayeon and Blackpink Jennie usually start the song because they pretty much have the "representative" voice of the group that's very prominent throughout their songs. Like even if you're a non-fan who doesn't know their names or faces the moment you hear that member sing you immediately know Oh this is a Twice/Blackpink song.

/r/kpop Thread