Many Asians consider white people are charming. That's one of the reasons.
And in Taiwan, we learn English to take tests. Music is a good way to learn English.
@Pasha
I'm not saying they are best just saying they are well known among us. Well there are lots of people from the different corners of the nation and they are well known too but the no is very few.
@Sylvia
I don't think they are popular just because of their charm.