Tunes have notes and tempos and rules. If the tune is "All the Things You Are," you have to adhere to its structure and to the tradition behind that structure.

Managing the creative process means selecting the best people and then letting them do their work. That means nurturing. It also means, from time to time, creating drama - even uncertainty - so that the creative environment has an edge to it, a charge, and does not run out of steam.

The conventional asset-allocation method is like sheet music. It is prescribed, it has right answers and wrong answers and it sounds about the same every time. But jamming is different. Jamming is when you make the music. When you improvise and adapt to conditions. When you are creative.

Every day, there are 770 million Cokes consumed, which means that there are 770 million purchasing decisions made each day regarding the product. To support those decisions, the company must constantly reinvest in its marketing links to its customers. As a result, a high level of creativity must go into everything the company does, from cause-related campaigns - Coca-Cola and its sponsorship of the Olympic Village in Atlanta, for example - to new catch phrases, commercials, marketing slogans, advertising campaigns and promotional tie-ins.

The C.E.O.'s job in a creativity-driven company is to be an impresario, not a manager.

The manager's job - the impresario's job - is to preside over the company's efforts to jam so the business runs really well.

A large part of the impresario's job has to do with maintaining and communicating standards of performance. Knowing how to set those standards - which are often more subjective than analytical - means knowing how to communicate the difference between something that is great and something that is just O.K.