Secondary triads reinforce modality. They do not occur as frequently as primary triads, which reinforce tonality. Secondary triads are used in harmonic progressions to create variety.
FIGURE 9.1: Chord Chart
Dominant relationship is the association of two chords whose roots area perfect fifth apart. Dominant relationship prevails when the chord Groups are assembled from Group 4 through Group 1 and then the tonic.
FIGURE 9.2: Dominant Relationship
FIGURE 9.3: Chord Progression
FIGURE 9.4: Normal Chord Progression
FIGURE 9.5: Elision
FIGURE 9.6: Neutral Tonic Chord Retrogression occurs when chords move from right to left on the chord chart. Retrogression is usually followed by normal movement.
FIGURE 9.7: Retrogression
The chord in minor often has a dominant function because it is similar to the dominant chord. The chord may be described as a dominant chord with an unresolved non-harmonic tone.
FIGURE 9.8: III in Minor