With their 2004 beast, the aptly titled Leviathan, Mastodon finally find their niche as a thinking man's metal band. Blending Voivod's neuro-thrash, Therion's majestic gloom, Morbid Angel's spirit of restless and morphing liquid black melody, and EyeHateGod's Southern rock gone awry, Leviathan is nothing short of supernatural. Evincing a decade's worth of maturity gained in just two short years, Mastodon have authored a bombastic modern interpretation of Herman Melville's Moby Dick, the classic metaphor for mortality's eternal (and unwinnable) struggle with divine injustice.