The Architecture of Music

Chords

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Chord Formulas and Interval Diagrams

Interval diagrams can be used to show how a chord formula defines the notes in a chord. Study the interval diagram and maj3 chords below. No matter which note is used as the bass note, the maj3’s chord formula and interval diagram remains the same and defines all the other notes for every maj3 chord.

Chord formulas and interval diagrams are very important to understand. Everything in this book is based on them and they are used to describe all the information that is to follow. Since no record of the interval diagrams of chords could be found in common images in music today, the process of diagramming, organizing, and cataloging chords as formulas and interval diagrams began. Interval diagrams were used as the tool to check chords from source to source to confirm their names throughout the two-decades-long research of chords for this book. And as will soon be seen, you can do many things with interval diagrams that help to graphically explain basic music theory in ways that standard musical notation has difficulty expressing.

Chord Formulas and Interval Diagrams