Sorry I wrote it twice wrote it twice... still getting used to this place and thought the first one had failed.
Well it's amazing that with the latest technology, J-pop singers STILL manage to sound so dire... maybe their lack of vocal skills are beyond the scope of even the latest pitch correctors.
You really notice the difference when they perform live that's when I run for cover!
Certainly, some of the non-mainstream singers are better, but at best, they're still so so when you put them on a global comparison.
The only one I've heard with any merit is Nora from the defunct Orchestra de la Luz. I've seen her play in Tokyo and Yokohama and she can really do it... all is Spanish too. A good vocalist, but not outstanding.