It is a popular digital pet for the kids. My elder daughter, Grace, has one. She got it as 7 years old birthday gift.
She always brings TamaGotchi to school and take care of it very nice.
I love this song, she played sometime when I have a nap on the sofa. Let’s play it.
Update: 2013.08.27
The youtube link is not working anymore. I can not find the original clip.
So I post another one here.