A Brief History of Western Music

Brown, David. Tchaikovsky: The Man and his Music. London: Faber and Faber Limited, 2007.

Caplin, William E. Classical Form. New York, NY: Oxford University Press, 1998.
Encyclopedia Britannica. https://www.britannica.com/.
Fauvel, John, Raymond Flood, and Robin Wilson, eds. Music and Mathematics: From Pythagoras to Fractals. New York, NY: Oxford University Press, 2004.
Felsenfeld, Daniel. Tchaikovsky: A Listener's Guide. Pompton Plains, NJ: Amadeus Press, 2006.
Grout, Donald J., and Claude V. Palisca. A History of Western Music. 6th ed. New York, NY: W. W. Norton & Company, 2001.

Lopinski, Janet, Joe Ringhofer, and Peteris Zarins. Music History 1: An Overview. Toronto, ON: Frederick Harris Music Co, 2010.
Lopinski, Janet, Joe Ringhofer, and Peteris Zarins. Music History 2: Middle Ages to Classical. Toronto, ON: Frederick Harris Music Co, 2010.

Vinet, Mark. Evolution of Modern Popular Music. Vaudreuil-sur-le-Lac, QC: Wadem Publishing, 2004.
Whittall, Arnold. Romantic Music: A Concise History from Schubert to Sibelius. New York, NY: Thames and Hudson Ltd, 1987.