When Mastodon invite you to go deep, you best bring an extra supply of oxygen. Given the place the Atlanta behemoth came from, a primeval, subterranean metal underworld, the prospect of plummeting even further within is almost enough to bring on a dose of the bends. Since their emergence at the start of the century, Mastodon have shown that brain-twisting heaviness doesn’t have to be dull-edged, and that it can even be a thing of spinning delight. This oddball compilation brings together rarities, covers and live tracks from throughout their career. And rather than adhering to anything so obvious as chronology it becomes a seemingly random, yet highly effective, stampede – but that’s Mastodon to the core. Most fans will have heard Fallen Torches, the album’s sole new recording an...
