The Japanese are sometimes harsh on their kids, they force them into instruments at young ages to prove Japanese superiority to
the west. A lot of it is old school Japanese culture, the kids play instruments, like in this video, but there is no soul or passion in there.
They do it because their don't want to disappoint their parents, not because they really have a passion for it.
That is why you don't see many videos of American kids like this, it is a Japanese thing, they do the same with regular school work.
Japanese kids have longer classes and don't have all the days off that American school kids do.
If you look at the girls face in the video, she looks like she is brainwashed with a lifeless expression on her face.