HI KimmoKun, recomending you to listen Ilaria Graziano. I found this artist with last.fm similars to Kimmiko Itoh. Here is nice song called Pearls. Unfortunately i can't post a links, because i'm new user and don't have permission to post links, but you can find easily on youtube
If you don't like it you can listen artists like Susan Boyle. She has amazing songs in that genre, like wild horses or dreamed a dream.Hope it was helpful
