There's a lot of variety of musicians in Korea. I cannot say they are the best in the world, but I can say that Korean artists are really dynamic artists, so I am going to show that from now on.
The word we have in Korea for K-Pop is 'Gaio.' And I guess it's a huge umbrella term. Basically it's like saying Coldplay and Kanye West, or Eminem and Celine Dion, are the same genre.