Different groups are differentially vulnerable to advertising; and their vulnerability varies not so much with the character or quantity of advertisements as with the informational resources they can claim by age, education, station in life, and government guarantees of consumer protection.
In the last century the practice of medicine has become no more than an adjunct to the pharmaceutical industry and the other aspects of the huge, powerful and immensely profitable health care industry. Medicine is no longer an independent profession. Doctors have become nothing more than a link connecting the pharmaceutical industry to the consumer.
The direction of all economic affairs is in the market society a task of the entrepreneurs. Theirs is the control of production. They are at the helm and steer the ship. A superficial observer would believe that they are supreme. But they are not. They are bound to obey unconditionally the captain's orders. The captain is the consumer. . . . [Consumers] make poor people rich and rich people poor. They determine precisely what should be produced, in what quality, and in what quantities.
The reason for backing tracks is to not veer off too far from the record and have what the fans actually want to hear. Artists use backing tracks just so they can stay close to the record and what the consumer heard for the first time. It's not to be confused with lip synching or anything like that cos that's not happening at all.