◆ Brand new, unread item. ◆ Waterproofing and boxed packaging for shipping. ◆ Anonymous delivery (Mercari delivery service). Prologue 1. The Mysterious and Fun Relationship Between Sound and Numbers Grand Piano and Exponential Functions Pythagoras and Music Sound and Trigonometric Functions ①-② Analysis of Sound Timbre and Overtones The Human Ear and Dissonance Consonance of Sound Pythagorean Tuning History of Tuning Systems Modulation and Tuning Systems The Spread of Equal Temperament Evolving Music and Mathematics Column 1: Various Tuning Systems and Scales Developed Around the World 2. How Instruments Produce Sound What is an Instrument? Types of Instruments How String Instruments Produce Sound Guitar and Violin How a Piano Works ① How a Piano Works ② How Wind Instruments Produce Sound How Woodwind Instruments Work How Brass Instruments Work How Percussion Instruments Work Instruments and Temperature Concert Halls Column 2: Why Stradivarius Violins Sound So Good Column 3: A Guide to Japanese Traditional Instruments 3. The Secret to Being Moved by Music Lies in the Brain Sound and Sound Waves Music that Moves Emotions Music and Information From Ear to Brain Music and the "Reward System" Music and Language Searching for the Music Center Column 4: "Amusia," Where Symptoms Vary by Patient, and the Relationship Between Language and Musical Ability Perfect Pitch and Language Function Acquisition and Genetics of Perfect Pitch Relative Pitch, Important for Musicians Synesthesia: Seeing Colors in Sound Rainbow-Colored Sounds Column 5: The Day the Ultimate Music is Created Through Brain Science Research 4. Techniques for Enjoying Music More Digital and Analog Music Compression Technology Techniques for Immersing Yourself in Music Development of Electronic Instruments Computer Music Column 6: Data Sonification, Allowing You to Enjoy the "Music" of the Universe 5. Scientists Who Loved Music Albert Einstein Hermann von Helmholtz Torahiko Terada William Herschel Brian May Max Planck Werner Heisenberg Richard Feynman Hitoshi Murayama The Physics Festival "Quantum Fest" Superstring Theory Quantum x Music String Theory Symphony "Consciousness" Fundamental Interactions ☆ Thank you very much! ☆