Biography
Kawasumi Ayako (川澄 綾子), is a seiyuu (Japanese voice actress) who was born on March 30, 1976 in Tokyo. She is a prolific seiyuu and J-pop singer.
She is affectionately referred to by her fellow seiyuu and fans as "Ayachii (あやちー)", "Peyaya (ぺやや)", "Ayasumi (あやすみ)" and "Aya-nee (あやねえ)", and she is a skilled pianist, having practiced the piano since childhood (this is most noticeable in that she composed and performed "...To You", the OP to Piano).
Biography text from Last.fm, available under CC BY-SA.