Neofolk singer-songwriters Akiko Shikata and Haruka Shimotsuki teamed up together for the song "EXEC_with.METHOD_METAFALICA/.", composed for the Ar-Tonelico soundtrack in the cinematic style of the series. It mixes parts of "METHOD_METAFALICA/.", by Akiko Shikata, and "EXEC_METAFALICA/.", by Haruka Shimotsuki, with original parts into a neoclassical arrangement. Albeit following the purpose of blending these two songs into a new one, most of the song, which is over seven minutes long, was made out of original recordings.

霜月はるか・志方あきこ on Last.fm.

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