PRESIDE, v. To guide the action of a deliberative body to a desirable result. In Journalese, to perform upon a musical instrument; as, "He presided at the piccolo."
You would never hear any song played twice in the same way. The words were retained, but within a certain frame there was great latitude, and the musician could improvise to his heart's content; and the more the variations and combinations, the greater the musician.
Music is of two kinds: one petty, poor, second-rate, never varying, its base the hundred or so phrasings which all musicians understand, a babbling which is more or less pleasant, the life that most composers live.
What strange impulse is it which induces otherwise truthful people to say they like music when they do not, and thus expose themselves to hours of boredom?