In this introduction to natural-base music theory, Ernst Levy presents the essentials of a comprehensive, consistent theory of harmony developed from tone structure. A Theory of Harmony is a highly original explanation of the harmonic language of the last few centuries, showing the way toward an understanding of diverse styles of music. Basic harmony texts exist, but none supply help to students seeking threads of logic in the field. In a text abundantly illustrated with musical examples, Levy makes clear the few principles that illuminate the natural forces in harmony. He shows that general principles can be successfully extracted from the wealth of examples. This book actually provides a theory of harmony.