I know her since 2005. Her famous song "HOME" was released in this year.
If you played "Final Fantasy XII", you know "Kiss Me Good-bye".
I was deeply moved by her newest song "告白(kokuhaku)".
I love her lyrics and song, of course, her voice.
I don't know how famous she is in your country.
If you don't know her, please do a web search!
By the way, who is your favorite musician?