Pyotr Iljich Tchaikovsky. The Concise Textbook On Harmony.
Pyotr Iljich Tchaikovsky. The Concise Textbook On Harmony. Title page. Autograph.
The Conservatoire’s class- room.
The Conservatoire’s class- room for theory of music lessons, in which P.I. Tchaikovsky teught in the 1870s