Pyotr Tchaikovsky is one of the Romantic period's greatest composers and the first Russian composer to achieve international fame and admiration. Written during the years that he worked as a professor of music theory at the Moscow Conservatory from 1865 until 1878, "Guide to the Practical Study of Harmony" is Tchaikovsky's illuminating and instructive work on the fundamentals of musical composition. The guide was not widely distributed after it...