Robert Plant launched the Digging Deep podcast in 2019 as a way for him to explore the intricacies and oddities of his body of work. A year later, he released Digging Deep: Subterranea, a double-disc deep dive that effectively functions as a soundtrack to the podcast. Plant talks about Led Zeppelin tunes on Digging Deep, but Subterranea pointedly concentrates on his solo career. It's a compilation that strives to make overarching connections, so it doesn't proceed in a chronological order, nor does it have all of his hits. Neither his oldies folly the Honeydrippers nor Raising Sand, his Grammy-winning collaboration with Alison Krauss, are here, nor are there big rock radio hits like "Little by Little" and "Tall Cool One." Instead, Digging Deep: Subterranea places 1993's Fate of Nations at the forefront and follows its strands front and back, creating a moody, adventurous bit of autobiography. Maybe it doesn't deliver the hits the way most compilations do, but it certainly captures the musical wanderlust that defines Plant's career.
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