Black Mountain aren't an especially original band. In their bleary burn, you can hear bits and pieces of Black Sabbath, of Spacemen 3, of Royal Trux, of X, and of about a million unheralded psych-metal wanderers who walked the earth during the 1970s. And they're not a particularly versatile band, either. They have, more or less, one note, and they hit slight variations on it over and over again. But when Black Mountain are on, there's not a single band on this planet that makes me feel the way they do. And on IV, their new album, they are on throughout. IV is, to be sure, an album of retro fuzz-boogie. But that style is done with a grand, expansive sense of vision that no other band right now can hope to match.