Growing up in rural Maine, June Baker didn’t get a chance to see many big-name pop stars perform in person. One of her first concerts was a tribute to the Backstreet Boys and Britney Spears, but it might as well have been the real thing. “That was really special for me,” she says. Call it “The Prophecy,” an “Invisible String” or a dose of good “Karma” — but a few decades later, Baker’s now the one making the “Wildest Dreams” of adoring Swifties come to life.