Boring DJs who never shut up, and who don't even pick their own records. The same hits, over and over. A constant stream of annoying commercials. How did radio get so dull? Not by accident, contends journalist and historian Jesse Walker. For decades, government and big business have colluded to monopolize the airwaves, stamping out competition, reducing variety, and silencing dissident voices. And yet, in the face of such pressure, an alternative radio tradition has tenaciously survived....