Postby blkmage » Tue Feb 16, 2010 3:01 pm
You'll probably want to reduce the scope of your talk, otherwise, you'll likely make tons of omissions (entire genres). For instance, for anime music, there's people like Nana Mizuki (who recently became the first seiyuu artist to have a number one album on the Oricon), Maaya Sakamoto, and other seiyuu who also sing. There's also anison people like JAM Project or I've Sound (members include MELL, Eiko Shimamiya, KOTOKO, and more) or marble who aren't seiyuu but do a lot of anime projects.
And then there's rock that's not visual kei, like such longstanding bands as the pillows, the brilliant green, or Supercar and more recent bands like Asian Kung-fu Generation, Beat Crusaders, and Orange Range. And there's also indie rock, where we get into newer and smaller bands like school food punishment, Rin Toshite Shigure, and 9mm Parabellum Bullet. If we're looking at more electronic stuff, there's Boom Boom Satellites and Polysics.
And if you're going to go into Vocaloid, there's the whole doujin music scene and Nico Nico Douga artists. Most notable Vocaloid music isn't actually covers of other songs, but are original compositions. There are a ton of famous artists, like livetune, supercell, cosMo, DECO*27, 164, OneRoom, etc. and they compose songs covering all sorts of stuff ranging from electronic to rock to pop to traditional. And the same is true for all the doujin music, but I'm far less familiar with that unless we're talking about derivative works like IOSYS' Touhou remixes or zts and dai's work on the Umineko soundtrack.
Basically, what I'm saying is that you can have a lot of material to work with if you choose even just one genre. Otherwise, you're going to be missing a lot of stuff.
Now specifically in response to your question about anime influencing popularity, the most accurate way I've found is to look up on Wikipedia for an artist's discography and hope that it includes the Oricon ranking of each single and album. Most big artists (like YUI) do.
Using YUI as an example, you'll notice that her early singles were all over the place. LIFE, the fourth Bleach ED, ranked 9th and the next single, Tokyo, ranked 15th. Her first real hit was Good-Bye Days, which was the theme to the movie she starred in, and ranked third. Her next single, I Remember You, did even better, at second. But her second anime song, Rolling Star, the fifth OP for Bleach, ended up in fourth. After that, her singles continued to rank consistently in the top, but she has about five singles before her next anime song, Again, the first FMA Brotherhood OP. So taking all that data into account, we can guess that because her initial anime singles didn't dominate and her other ones did, that she was likely helped a bit by her anime songs but they didn't catapult her to stardom. That is, she was popular in her own right and likely would have been without doing anime songs.