Compilation album containing all of the songs from the Ar tonelico Hymmnos Musical Claire ~Promise of the Breeze~ and Ar tonelico Hymmnos Musical Spica ~A Heart-Crafted Gift~ albums, while at the same time expanding them into full-versions and removing all of the sound effects and voices that previously made impossible listen to them alone. This album can also be considered as Takashige Inagaki's final posthumous work, since it was released a year and a month after his death.