Kazakhstan, Hong Kong, The Philippines and India doesn't have really great singers unlike these 8 countries

What about USA ;-;

Probably 70% of USA have great singers, while the rest of it are terrible singers

SINGRES.IO

Other countries that have really good singers but not in the 8 horsemen:
Turkey
Bosnia and Herzegovina
Mexico
Portugal

bro, you yall suisse gonna sing jang yoon jeong song

also i am from philippines

WHErES USSR

USSR is gone, but Soviet Union had really good music especially Latvia