The follow-up to the cult-classic debut, 2011's 'Urkaos', both the CD version and LP version of 'De Mysteriis Dom Christi' will feature entirely different tracklistings as well as music. REVERORUM IB MALACHT originally operated as part of the Swedish "anti-cosmic" black metal community until members Lundin and Mikael converted to Catholicism around 2009. Lundin was known for his involvement with Dödfödd, Emit, and Ofermod. Ever since then, the debate has not been about how captivating and haunting the music is, but about whether or not this band can still be "black metal." On 'De Mysteriis Dom Christi', the band uses the phrase "Roman Catholic Black Metal." Antagonism reigns. Mysterious, utterly obscure, divergent, murky, lo-fi, eerie, transcendental, old, occult: what do all of these adjectives have in common? They not only refer to the music created by REVERORUM IB MALACHT, but they are also embody much of what one experiences in those epic cathedrals that plague Christendom.