Dead musicians are taking the stage again in digital form. Is this the kind of encore we really want?

In 1972, when I was 5 years old, my parents drove my brother and me to Disney World. It had opened only the year before, but even then it was fast becoming a standard American sojourn. Sure enough, my brother and I found the Magic Kingdom remarkable as we spent several days taking in the park's mechanical wonders: the Jungle Cruise, the Country Bear Jamboree and the Hall of Presidents, where an audio-animatronic Abraham Lincoln - essentially a moving, talking mannequin

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