Born in elevators and supermarkets, Muzak has spread to...

Born in elevators and supermarkets, Muzak has spread to restaurants, hotels, airplanes, telephone hold services, and waiting rooms. The public-relations experts believe that human beings fear silence - that is, the absence of constantly imposed direction. It is further believed that if we can be relieved of our fears, we will gain enough self-confidence to buy, eat, vote, fly, or simply go on living.