What Are Ninth Chords, and What Is the Difference Between Cadd9, Cmaj9 and C9?

Ninth chords extend the four-note structure of a seventh chord by adding another note above it. They are among the most widely used extended… read more

What Is Extended Harmony, and How Do Seventh, Ninth, Eleventh and Thirteenth Chords Work?

A triad is the basic building block of much Western harmony. Three notes, arranged in a particular relationship, are enough to establish a… read more