You don't actually: https://www.npr.org/templates/story/story.php?storyId=95689436 https://www.npr.org/templates/story/story.php?storyId=956894... "And to pre

You don't actually: https://www.npr.org/templates/story/story.php?storyId=95689436 https://www.npr.org/templates/story/story.php?storyId=956894... "And to prevent sophisticated laser devices from capturing the telltale vibration of his voice on the glass, music played between the panes."