This song serves as the way of communication between Antibodies, and it is used by them to coordinate their movements and actions. Although this wasn't reflected during Ar tonelico Qoga: Knell of Ar Ciel, this means that this song can be heard in any area where Antibodies are present. This song can be heard at several points when Cocona and the other characters encounter the Antibodies and face off against them during the course of Hymmnos Musical Cocona's story.