Kokia

Kokia is a Japanese singersongwriter from Tokyo. She is mostly associated with games and anime soundtracks having appeared in eight different game/anime soundtracks to date. Kokia has an extremely talented voice she even held a longtone opera note for a little over 29 seconds on national TV once. She is most wellknown in Hong Kong and Taiwan for her song Arigatou... which became so popular it was even covered by star Sammi Cheng. Her biggest hit in Japan was the single The Power of Smile / Remember the Kiss which reached 15 on Oricon charts. Source: Wikipedia