""Key To Practical Harmony: A Comprehensive System Of Musical Theory On A French Basis"" is a book written by Homer Albert Norris and published in 1903. The book provides a detailed and comprehensive system of musical theory, based on the French approach to harmony. It covers a wide range of topics, including chord construction, chord progressions, modulation, counterpoint, and more. The book is designed to be practical and useful for musicians of all levels, from beginners to advanced players. It includes numerous examples and exercises to help readers apply the concepts they learn. Overall, ""Key To Practical Harmony"" is a valuable resource for anyone interested in learning about music theory and improving their skills as a musician.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.