It was the year 2355. September 5th to be exact. Humans were celebrating their most cherished holiday, the origins of the fourth level of intelligence.

The first level of intelligence occurred sometime in the early twenty-first century. It was called "artificial intelligence" in those days, springing primarily from the early use of computers attempting to surpass human intelligence without much success. Attempts were made to apply the process to the driving of automobiles, while the result was more disasters instead of fewer.

But the first attempts, as always, were more of a prelude than a finale, which led to the second level of intelligence. Towards the later part of the twenty-first century, what was being called "superior intelligence" at that time was being applied to drones ferrying the more privileged elements of the social order over the mass of chaos. The drones could outmaneuver the crowded field of low flying objects in ways humans could not.

Which of course led to the third level of intelligence. During the twenty-second century, spacecraft loaded with robots imbued with the third level of intelligence were sent to the planet Mars to reconstruct life suitable for human habitation. Humans could not comprehend what such an environment would look like, but the new robots pulled off the result with a breeze.

For an encore, these robots constructed the fourth level of intelligence. The result was a form of sound for influencing human emotions and reactions. The resulting sound would send humans into a fury. Some would burn down their property or smash up their automobiles in the excitement that the new sound produced.

But there was a librarian who found something familiar in the sound being produce by the fourth level of intelligence. She had heard it before. It was stored in the archives of a library labeled Beethoven's Third, Seventh and Ninth Symphonies.