ATLANTA, Ga.—The opening notes of an instantly recognizable action-movie theme resonate through a darkened theater, slowly building to a crescendo.
Transfixed, 8-year-old Royce Diaz perches on the edge of his seat.
He and his older brother and sister came to see superheroes, but not the kind who outsmart villains, punch through walls, or fly.
The trio traveled six hours by car with their parents to see heroes who make magic of another kind.
The fingers of one blast between piano keys faster than a speeding bullet. The other wields a cello bow with the precision of a master swordfighter.
The Piano Guys, as they’re known, include a duo of self-described “dorky dads.” But as a recent live concert performance began, clips from a superhero movie flashed across a screen over the stage….