 In June 2006, a message from Kawashima was posted on the Slaughter Garden, asking for vocal help with two parts of the album; he wanted volunteers singing lyrics in Latin to send him audio files so he could build up an epic chorus.Some tracks of the Album is named after various parts from the Requiem mass.It also holds some progressions and melodies from Mozart's Requiem in D-minor

Samples from the track "Me-Devil" are featured on the "Global Metal" trailer.