The book "The Conductor of the Symphony Orchestra: The Theory of His Art" by the author Hector Berlioz is an important work on the art of conducting and the performance practice of symphony orchestras. In this book, the author examines various aspects of the conductor's role, his methods and techniques of orchestra management, as well as the principles of developing musical expression during music performance. Berlioz describes in detail the interaction between the conductor and the musicians, highlights the importance of a deep understanding of a piece of music and the ability to convey its ideas through the orchestra. This book is considered a classic in the field of music conducting and a useful guide for anyone interested in the art of music and its performance. "The Orchestral Conductor: Theory of His Art" is an important theoretical source that inspires readers to understand in more detail the high skill of the conductor and contributes to the improvement of the quality of performing art in the field of symphonic music.