Akiko Yoshida is a Japanese folk/world/new age singer-songwriter, who performs under the stage name Kokia (stylised as KOKIA, an anagram of Akiko), and sings with a wide radius of musical influences. She is best known for her songs "Arigatō..." (Thank You?) (which reached #1 in Hong Kong when it was covered by Sammi Cheng) and "The Power of Smile." She is also recognised for her numerous contributions to anime/game soundtracks, the most notable being "Ai no Melody/Chōwa Oto (With Reflection)" for the film Origin: Spirits of the Past, "Follow the Nightingale" for the game Tales of Innocence and "Tatta Hitotsu .