Added Note Extensions
Another important group of extensions are the added note variety. The basic idea of an added note chord is that you take an ordinary triad and add to it other notes. The characteristic feature of added note chords is that the thirds that lie in between are omitted. This can be understood by examining the main types of added note chords.
a. Chord of the added sixth:
Sixths: With a sixth chord (sometimes called an added sixth chord), you start with a basic triad; then add an extra note a second above the fifth—or a sixth above the root. You can have major sixth and minor sixth chords, as well as sixths above diminished and augmented triads
Major sixth: Major sixth chords are “playful.” To build a major sixth chord using half and whole steps, remember: root + 4 half steps + 3 half steps + 2 half steps
Minor sixth: Minor sixth chords are “dark, sensuous, troubled.” To build a minor sixth chord using half and whole steps, remember: root + 3 half steps + 4 half steps + 2 half steps the added major sixth chord is probably more frequently used as an addition to both the major and the minor common triads.
a. Minor triad with minor sixth
b. Minor triad with major sixth
c. Major triad with minor sixth
d. Major triad with major sixth
e. Major triad with augmented sixth
b. Chord of the added ninth
a. A major chord of the added ninth in closed position voiced in four parts. To create this chord, a major second is inserted between the root and the third of a major triad.
b. A major chord of the added ninth in four parts, where the ninth is placed above the triad.
c. A major chord of the added ninth in wide-open spacing.
d. A minor chord of the added ninth in closed position, where the ninth is inserted between the root and third of the minor triad.
e. A minor chord of the added ninth, where the ninth is placed above the triad.
f. A minor chord of the added ninth in wide-open spacing.
c. Added sixth and ninth chord: Added sixth/ninth chords work best when they are presented within a fairly complex chordal texture—that is, a texture full of extensions, such as sevenths, ninths, and so on.
a. A major triad to which has been added the sixth and ninth.
b. An added sixth/ninth chord in wide spacing.
c. An alternative wide spacing.
d. An added sixth/ninth chord voiced for four parts. This produces a chord of equal fifths—also known as a quintal tetrad.
e. The minor form of added sixth/ninth.
f. A minor added sixth/ninth chord in wide spacing.
g. A minor added sixth/ninth chord in first inversion.