The charm of the popular "Lip Synch Battle" series is the way that the contestants, all very talented and successful performers, transcend the limits of race and gender -- and other limits, too, like vocal range. In her way, real-life heiress Florence Foster Jenkins was doing the same thing a century ago. Her dedication to music was monumental. So was her lack of talent. But she lived a blissful life with a devoted husband, staging elaborate tableaux and concerts. Like the emperor with the...