Dethklok are the most brutal band on earth, and The Dethalbum is their most essential musical document. The fictional Metalocalypse band’s real-life debut collects many of the hilariously heavy songs from Brendon Smalls’ TV show into full-length form. Standouts like “Murmaider,” “Thunderhorse” and “Face Fisted” are both absurdist and absurdly heavy, and for a time, Dethalbum was the highest-charting death metal record in the genre’s history — until Dethalbum II overtook it. In other words, your metal record collection isn’t truly brutal without this.