Shadow Kingdom, the 2021 concert film billed as “The Early Songs of Bob Dylan,” is now available on digital via Sony Pictures, and it remains one of the most quietly extraordinary things Dylan has put his name to in years. Filmed in an intimate setting with a small ensemble, the performance strips back decades of mythology to focus purely on the songs, including “Forever Young,” “I’ll Be Your Baby Tonight,” and “It’s All Over Now, Baby Blue,” delivered with the kind of unhurried authority that only comes from an artist who has been living inside this material for sixty-plus years.