Fixed some wrong romanizations of the musicians.
http://www.aska-aloha.com/en_disc/askastrings.html
http://www.aska-aloha.com/disc/askastrings.html
Source for Fumiyo Tobise = 飛世史
That was hard to find.
http://amadeus-apartment-building.co.jp/popular.html
It's the only site where Toshiko Sakai is credited as violinist. Also, 酒井智子 could be romanized as "Tomoko/Satoko Sakai" but there is no credits as violinist for those combinations.
http://www2.big.or.jp/~n-fujii/jazzDB/disc_HTML/272.htm
Here, I have found some artists names.
片岡真美 = Mami Kataoka (99% of being the correct romanization). No finds for "Mami Kataoka" in the music field.
原田美佳 = Mika Harada?
Yet not confirmed but is the more likely romanization.
上田眞仁 = Masahito Ueda?
Again, not confirmed and I don't think that anyone can find something about this artist.