Basic Music Theory The richest person in the world is poor without music. Basic Music Theory is the best, easiest and least expensive book you can have with music. This text is absolutely necessary to understand what things mean in music. It answers all your questions about chords, keys, scales, notes and intervals, etc. It also includes a special method developed only by the author to learn ALL your chords in ONE EASY EXERCISE. This unique exercise alone is worth more than the entire value of most music books. Basic Music Theory will complete your musical vocabulary, help you to become a fine musician and make your study of music enjoyable.