Little known information, but the track "The Mad Arab" is about H. P. Lovecraft's character Abdul Alhazred, the author of the fictional forbidden occult lore "The Necronomicon."
Mercyful Fate is a Danish heavy metal band that was formed in 1981 by vocalist King Diamond. They were part of the first wave of black metal music in the early 80s and are known as one of the most acclaimed bands in the European heavy metal scene. Mercyful Fate was the subject of controversy due to their Satanic imagery and lyrics. They are known for their theatrical falsetto vocals and occult themes.