Ar tonelico
is a Japanese singer, born April 3, 1980 in Tokyo, with a four octave vocal range. She is most well known for her vocal performances in Gust-produced video games such as the "Ar tonelico" series and "". She has also performed in various Japanese television advertisements and events, theater, and children's programmes. Her debut album "Haruka naru Toki no Utagoe" was released January 2008.