Extensions on Diatonic Chords
Extended Chords are discussed in Basic Music (TC 12-41\ NAVEDTRA 10244). These chords contain five or more pitches, which requires a selection of notes for four parts. Chords with extensions appear primarily in root position. An extension may be analyzed as an essential harmonic tone or as an unessential non-harmonic tone (appoggiatura or accented passing tone). Extensions appear primarily in the soprano voice.
The major ninth on a dominant seventh resolves down by step to the root of the dominant seventh (appoggiatura) or to the fifth of the tonic at the change of chord. The third of the dominant seventh is occasionally omitted and the ninth functions as an upward resolving appoggiatura to the third. Figuring for chords in root position with a ninth is the single numeral 9.
FIGURE 11.1. The Major Ninth in Root Position
FIGURE 11.2. First Inversion of the Major Ninth
FIGURE 11.3. Second Inversion of the Major Ninth
for third inversion.
FIGURE 11.4. Third Inversion of the Major Ninth
for fourth inversion (rare) resolving to a I .
FIGURE 11.6. The Major Ninth on the Supersonic Seventh