While Metalocalypse, a show where a death metal band is the greatest cultural force on the plant, is about music (featuring songs in every episode), it's surprising that it took the show four seasons to get its first proper musical. Fortunately, the wait is over, and Dethklok fans can finally rejoice as they drink in the majesty and mayhem of Metalocalypse: The Doomstar Requiem - A Klok Opera. Despite Dethklok's music typically being used as a part of the series narrative, the previous three Dethalbums don't really have much in the way of a narrative. This makes The Doomstar Requiem a completely different beast compared to their previous work. In true operatic fashion, the album tells the story of Dethklok's journey to rescue their guitarist Toki Wartooth from the Metal Masked Assassin while also describing how Toki originally joined the band after taking part in an epic guitar battle with Skwisgaar Skwigelf during his initial band audition. The music is, as always, excellent, but what really sets A Klok Opera apart is the narrative, which visits Dethklok's back-story to shed some light not only on where the planet's greatest (fictional) band came from, but on the apocalyptic forces that seem to follow them. The downside of this approach is that it makes the album one that will really only make sense to fans of the show, but for those of you out there who are already Dethklok disciples, The Doomstar Requiem is not to be missed.
AllMusic Review by Gregory Heaney