岡崎律子(Ritsuko Okazaki)
Rituko Okazaki was active as a singer-song writer, a Licycist in Japan from 1993-2004.
Especialy for anime and anime voice acters She sung ,composed or wrote songs.
Her soft gentle sweet whisper voice is loved by her fans.
See also her public homepage discography and wiki for details.
http://www.ne.jp/asahi/okazaki/book/index.html
http://en.wikipedia.org/wiki/Ritsuko_Okazaki