Last month, I first mentioned about singer-songwriter Yoshiko Goshima（五島良子）and her collaboration with techno unit Denki Groove（電気グルーヴ）on "Niji"（虹）back in 1995. Apparently, according to her J-Wiki article, that was the song which put her on the map, so to speak, but she did put out a good amount of singles in the 1990s starting from 1990 itself. Not a whole lot more information about her except that she was born in Nagoya, and from another webpage, she has a 5-octave range.
It's more of the high notes from her July 1993 single. For kayo fans, this particular song may sound rather familiar since it is a cover of "Shiroi Iro wa Koibito no Iro" (White is the Colour of Lovers) which was originally recorded by Betsy & Chris all the way back in 1969 with Kazuhiko Kato（加藤和彦）and Osamu Kitayama（北山修）of The Folk Crusaders creating it. Yoko Kanno（菅野よう子）was behind the arrangement of the song, and Goshima's heartwarming and child-like delivery (with the harmonies that also distinguished the Betsy & Chris original) help in selling the ever-calming song. The fantasy element is further enhanced by Kanno's arrangement that sounds as if it had been made for "Lord of the Rings".