Used to be you could tell where you were in America by what was on the radio. “When I turned on the radio, I heard America singing, even in the dumb banter of ‘morning zoo’ hosts. But then last summer, rolling down a highway somewhere between Montana and Wisconsin, something new happened. I lost my way, and the radio couldn’t help me find it. I twirled the dial, but the music and the announcers all sounded alike, drained, disconnected from geography, reshuffling the same pop playlists and canned bad jokes. What a miserable trip. I heard America droning.”