Do you know if someone is korean,japanese, or chinese?

[pommy48]

Well, the other "can you tell the difference between languages" is too easy, so this is another, can you look at an artist without looking at their name or listening to them and know what country they're from?

I was confused last summer in Taiwan watching SIGNAL by KAT-TUN, I wasn't exposed to a lot of Asian music as I am now, so I thought they were Korean, but after watching their style, i kinda thought they were Japanese and I was right! and the fact the announcer guy for MTV said, coming up is japanese boy group KAT TUN lol
*cross fingers and remember the poll this time*
oh and I'm just sticking with these 3 groups, cause adding other south asian countries would be just @_@...