My run down of the major artists:
(Note: I am judging these bands on their songs in general, not just the ones featured in DC openings, endings, and movies)
5. Zard
She is a very talented singer no doubt about that. Unfortunately she passed away a few years ago and can not continue to create great music. But she did manage to make some great songs, all of which are memorable. I place her fifth mainly because she has only had one or two songs that I truly can not get enough of, while the rest are okay.
4. Rina Aiuchi
Very talented singer, just a pity she retired last year. But her final album, Last Scene, has some great songs in it. Her older songs are good as well, but not as good as her most recent songs. I place her fourth only because I don't think her songs can compare to number three, two and one.
3. Mai Kuraki
She's a very gifted singer with some pretty darn good songs outside of DC. She can sing both sad and happy songs, with a huge range of variety. She's still young and she's already made so much progress I'm sure she'll do even better in years to come. I place her third because, though she has some good songs, she doesn't have a huge amount of songs compared to other artists and she doesn't make new albums or singles and fast as other artists.
2. B'z
Really close to first, this is my favorite male Japanese band. And I think most of the world agrees, because B'z tours to all corners of the globe and racks up huge numbers of views on YouTube for a foreign band (their C'mon PV surpassed 1,000,000 views in only a matter of weeks). They have a huge variety and they're getting better and better as the years go on. I place B'z a close second only because their main stream songs are good, but their not so well known songs are poor in comparison.
1. Garnet Crow
My favorite DC artist of all time by a slim margin. GC has amazing talent and can sing some extremely sad songs (Rainy Soul) and also some extremely happy songs (Smiley Nation). Their skill goes past even the advertised and famous songs. Some of their not so well known songs that have fallen beneath the radar are equally as good, if not even better. For example, the songs Nora; Candy Pop; Wish; Crier Girl, Crier Boy (Ice Cold Sky); Strangers; and The Crack-Up are all songs that are worth hearing. I place this band first due to this fact, and also because it's something I find the other artists couldn't achieve.