As with many musician’s career retrospectives, listening to Robert Plant’s new compilation Digging Deep: Subterranea (CD, digital) had me wondering just who this collection was for. It’s not a complete greatest hits set, while the three (soon to be two) unreleased songs make this a possibility but maybe not a necessity for serious fans. What it does do, however, is present an interesting (though hardly comprehensive) survey of his solo career.
