Musical expression is not complete with emotion alone.
Only by clearly understanding the principles and theoretical foundations of music composition can you convey the music you want to express more logically and persuasively.
This book focuses on the fundamental theories that students who wish to learn music must know, and aims to help them experience the importance of a theoretical foundation in practical practice.

This book, consisting of six chapters, covers a wide range of topics, from the basics of music, such as notation and musical notation, to scales, chords and harmony, modes, and various scales.
Each topic is explained based on frequently discussed topics in actual music theory, and is structured to enable practical understanding and application, rather than simply memorizing the theory.
In particular, practice problems are included at the end of each chapter to help students develop a sense of reality and connect theory with real-world problem-solving skills.