What is the secret code behind so many musical compositions? How do you substitute chords to create greater musical complexity? Why is music so good at playing with people's emotions? In this compact book, composer and pianist Jason Martineau presents the elements of music in clear and comprehensible terms. Packed with superb diagrams and a wealth of fascinating hard-to-come-by musical tips, this is a great primer, and an invaluable resource for novice and professional alike. "Fascinating" FINANCIAL TIMES. "Beautiful" LONDON REVIEW OF BOOKS. "Rich and Artful" THE LANCET. "Genuinely mind-expanding" FORTEAN TIMES. "Excellent" NEW SCIENTIST. "Stunning" NEW YORK TIMES. Small books, big ideas.