Ar tonelico
In 2004, she held her first ever live tour. In 2005, she debuted as a major label artist under the Hats Unlimited label run by violinist Taro Hakase. Her association with the label led to Shikata working on many game soundtracks, such as ' and '. Shikata continues to work with the "Ar tonelico" franchise today, releasing music for both the and games.