Knowledge base
extended harmony
What Is a Thirteenth Chord, How Is C13 Constructed, and Why Are Some Chord Tones Omitted?
Thirteenth Chords Explained: The Richest Traditional Extended SonoritiesThirteenth chords represent the highest commonly used extension in traditional tertian harmony. They are built by continuing the… read more
What Are Eleventh Chords, Why Do They Often Omit the Third, and What Is the Difference Between 11 and ♯11?
Eleventh Chords Explained: Suspended Qualities and Harmonic SpaceEleventh chords extend the structure of a ninth chord by adding another note: the eleventh above the root.
They… read more
What Are Ninth Chords, and What Is the Difference Between Cadd9, Cmaj9 and C9?
Ninth Chords Explained: Adding Depth and Colour to Seventh ChordsNinth 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?
Extended Harmony Explained: From Triads to Thirteenth ChordsA triad is the basic building block of much Western harmony. Three notes, arranged in a particular relationship, are enough to establish a… read more