A musicologist is a man who can read music but can't hear it.
Great music is that which penetrates the ear with facility and leaves the memory with difficulty.
Magical music never leaves the memory. Composers should write tunes that chauffeurs and errand boys can whistle. Music first and last should sound well, should allure and enchant the ear. Never mind the inner significance. The English may not like music, but they absolutely love the noise it makes.