Percy Goetschius,
Lessons in Music Form
“ CONTENTS OF THE PHRASE.—The question may arise, what is it that makes a phrase,—the rhythm, harmony, or melody? Strictly speaking, all three; for music subsists in the ceaseless co-operation of these three primary elements of composition, and no phrase is wholly complete without the evidence of each and all. Generalizing the definitions already given, the function of each of these primary elements may be thus described: The element of harmony regulates the choice of the tones that are to sound together; the upright shafts of tone (chords) which determine the body, or framework, of the music. ”

