Ruttokorppi (Plagueraven) consists of two 2 Satanic spirits Rutto and Korppi merging into the entity Ruttokorppi to perform Black Metal in the 90's vein with great melodic yet dark approach not heard much these days when every talentless teenager performs their "raw BM". This is a hymn of praise to Satan and works that have been made in His praise like Thy Mighty Contract, Saga of the Horned King, Principle of Evil Made Flesh etc..