Ar tonelico
is a Japanese singer-songwriter and composer, who is known for writing music for games and anime. She is best known for her contributions to the "Ar tonelico", "Shadow Hearts" and "Umineko no Naku Koro ni" games, as well as anime adaptations of "Umineko no Naku Koro ni", Akatsuki no Yona and "Tales of Symphonia".