Board Thread:News and Announcements/@comment-4875891-20121204155137/@comment-6192846-20130202125935

Not sure if that makes it canon. It is more like a symbollic play on the characters MOTHY more than anything. However, I think the most recent information about the song and MOTHY's comments confirms this was intended to be part of Evillious.

I believe he meant something along the lines, "This is not part of any particular series (Story of Evil, Original Sin, Clockwork Lullaby, etc.) and is a song that is related to Evillious but not grouped with any other songs.