 For example, "When All Light Dies" was previously the title of a song by Trivium; "Serenity in Murder" is also the name of a Slayer track; "Razorblade Salvation" is also a song by Sinergy; and "Black Winter Day" is the name of a track by Amorphis.The album title, as well, could potentially be a reference to the Kreator track "Servant in Heaven (King in Hell)" from their "Violent Revolution" album.Much of the lyrics reference heavy metal also, i.e.