Post-Apocalypto is the kind of gloriously silly concept album that only Tenacious D could make. Comedic duo Jack Black and Kyle Gass are forced to navigate a post-apocalyptic wasteland, trying to “survive and thrive” in a world populated by dragons and gorgons (“HOPE”), finding themselves torn over repopulating Earth (“MAKING LOVE”), and even meeting a sensitive cyborg (“ROBOT”). The music, once again, swings between acoustic power ballads full of over-the-top ’70s pomp and heavy rockers powered by Dave Grohl on drums. (They also throw in a goofy hip-hop jam, complete with Auto-Tuned crooning.) And despite its hilarious end-of-the-world premise, this wild tale closes on an unexpectedly earnest note—though no spoilers here.