I recently bought Fundamentals of Musical Composition by Arnold Schoenberg and I am excited to be reading it as it is the first real reading I am doing on musical composition. In the first chapter he writes the following:
"A composer does not, of course, add bit by bit, as a child does in building with wooden blocks. He conceives the entire composition as a spontaneous vision. Then he proceeds, like Michelangelo who chiselled his Moses out of the marble without sketches, complete in every detail, thus directly forming his material.
"No beginner is capable of envisaging a composition in its entirety; hence he must proceed gradually, from the simpler to the more complex. Simplified practice forms, which do not always correspond to art forms, help a student acquire a sense of form and a knowledge of the essentials of construction. It will be useful to start by building musical blocks and connecting them intelligently."
My question is how a composer can in their vision of the composition, imagine the entirety of the form before composing even a single motive. Sure, before beginning a composition, the composer feels the ineffable essence of what they wish to express in their composition, but the form is part of that too?
I was surprised to read that a composer does not add bit by bit, since it seems natural to compose by writing a theme, and then a contrasting one. I have not, though, had much success doing so, so I guess I must begin small and internalize form as a begin composing small forms for practice. I may be misunderstanding something, but reading this seemed like a reality check that I was thinking of form wrong as a composer. Or maybe this "spontaneous vision" of the form is something only the greatest of the great composers can master. I don't know; I'm a beginner.