The principal function of form is to advance our understanding. It is the organization of a piece which helps the listener to keep the idea in mind, to follow its development, its growth, its elaboration, its fate.
Arnold SchoenbergGreat art must proceed to precision and brevity. It presupposes the alert mind of an educated listener who, in a singleact of thinking, includes with every concept all associations pertaining to the complex.
Arnold Schoenberg