In 1996, Dwell Records released "In Memory of Celtic Frost", a collection of songs covered by other bands. Notable bands that appeared on this tribute collection include Enslaved, covering the song "Procreation (of the Wicked)"; Opeth, covering the song "Circle of the Tyrants"; Swedish death metal band Grave, covering the song "Mesmerized"; Canadian thrash metal band Slaughter, covering the song "Dethroned Emperor"; Apollyon Sun (featuring Tom G. Warrior himself), covering the song "Babylon Fell"; and the Norwegian black metal bands Emperor, covering "Massacra", and Mayhem, covering the song "Visual Aggression". The tribute album also features Celtic Frost songs covered by several lesser known and now defunct metal bands. The hard to find CD is now out of print.