Requiem (Live At Roadburn 2019) marks the bombastic conclusion of a project over 30 years in the making: the legendary Celtic Frost/Triptykon "Requiem" performed for the first time in its entirety and with full classical orchestration (by the Dutch Metropole Orkest). “Requiem” (46:00 min.) is composed of three chapters: "Rex Irae" (first appeared on 1987’s Into The Pandemonium album by Celtic Frost), "Grave Eternal" (newly written middle part), and "Winter" (first appeared on 2006’s Monotheist album by Celtic Frost).

A team of Arctic geologists stumble across an abandoned laboratory in which the Nazis developed an incredible and brutal secret weapon during the final months of WW2. Deep in the ice, they accidentally awake a deadly army of flying zombie sharks ridden by genetically mutated, undead super-humans, who are unleashed into the skies, wreaking their bloodthirsty revenge on any aircraft that takes to the air. An elite task force is assembled to take on this deadly threat and stop the Sky Sharks from conquering the air, but as time runs out, the task force realises they will have to fight fire with fire, and the stage is set for the greatest flying super-mutant zombie shark air battle the world has ever seen....