Dominant Ninth (9th) Guitar Chord Arpeggio- Scale Based Patterns

Guitar Lesson Summary & Chart Explanation

Dominant Ninth Guitar Chord Arpeggio

A ninth chord is simply a "fancy" seventh chord, and is therefore also in the Dominant 7th Family of chord and Scale Qualities. It has one extra note, the ninth scale degree. The ninth is the same as the second scale degree, an octave higher. It gets a nine because it hasn't changed the structure of the seventh chord its been added to. If it changed the chord (by replacing the closest note, the 3) it would be called a 2.

If the second scale degree replaces the third in a chord it creates a Suspended Second or a Sus. 2 (pronounced suss-two) chord.

If it doesn't replace anything and is just "icing on the cake" its a Ninth Chord. We assume that the flatted seventh is also there. If the flatted seventh scale degree was not present, it would be a Major add Nine chord, not Ninth chord. If the chord had a natural 7 rather than a flatted 7th, it would be a Major Ninth chord.