All triads may be used in their first inversion.
Diminished and augmented triads, however, are best used in their first inversion.
The six-four chord may be used at the close as the cadencing tonic six-four chord. Do not approach the root and fifth in similar motion, as at b. [[Fig. 88.]]
| Fig. 88. |
The dominant seventh may be used in any but its second inversion, the fifth being omitted.[A] The seventh requires no preparation. Other chords of the seventh are better not used until second species and later.
If possible, let the chord in the first measure appear complete. The last chord but one should be complete, unless some form of V or V7 is used. [[Fig. 89.]]
| Fig. 89. |
Consecutive major thirds may be used when three or more parts are employed. [[Fig. 90.]]
| Fig. 90. |
A note may now be repeated in the lowest part when it becomes the seventh of a dominant seventh-chord. [[Fig. 91.]]