Almost since the full-length album format began, cover art has been a key piece of the puzzle, adding visual interest (and occasionally a physically interactive component) to a work of art.įrom the fold-out gatefolds of the vinyl era to pull-out liner notes in CD jewel cases to the small icon on a digital player, cover art has changed over the years, but it still helps define how we look at a particular album. Yes, the sounds are certainly the most essential element, but a lot of other things go into making an album a classic.