Help finding more by this artist

I have been trying on and off for years to find information and/or albums by a Japanese opera singer who appears to be called Yasashii Sasayaki Ga. I have only ever heard one song by her and it was on the classical soundtrack to the anime Gankutsuou. She sings the third track (the mad scene from Lucia di Lammermoor by Donizetti). I would LOVE to know if she has more albums because this woman has one of the most beautiful voices I have ever heard. Because I cannot speak Japanese, can anyone here with knowledge of the language help me?? The album is on Amazon Japan but this site won't let me link to it.

She is a Slovak singer, Luba Orgonasova.
"Yasashii Sasayaki Ga" is not her name but the Japanese title of "Il dolce suono" from Act III scene 1. It's generally called あの方の優しい囁きが(狂乱の場)[Ano Kata no Yasashii Sasayaki ga(Kyouran no Ba)], though.
*狂乱の場[Kyouran no Ba] means "the mad scene."

THANK YOU SO MUCH. You have no idea how happy this information makes me!!!!!!!!