Interpolated chord is that one which appears in the middle of a “harmonic cliché”. For example, in the cliché II – V – I:
| Dm7 | G7 | C |
If we put the chord Ab7 before G7, it would be considered as an interpolated chord:
| Dm7 | Ab7 G7 | C |
Notice that Ab7 is acting as subV7. This is the most common occurrence of an interpolated chord.
Another example, this time using the chord Db7 before C in the cliché V – I:
| Am7 | G7 | C |
| Am7 | G7 | Db7 C |
In this case, many authors call this resolution as “indirect resolution”, because the tonic didn’t come automatically after the dominant V7.
How to use interpolated chord
The Utilization of the interpolated chord can serve as a surprise factor due to the partial disrupting of the harmonic cliché, or it can serve as option to delay the resolution. All depends on the related melody and the idea of the arrangement performer.
Go to: Borrowed chords
Back to: Module 10