Harmonic Functions
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Identifying the I, IV and V degrees
Harmonic Functions in Minor Keys
Modulation
Modulation to Distantly Related Keys
Construction and Identification
Other Tutorials:
Related Exercises:
Harmonic Progresssions Dictation
Construction:
Identification:
Modulation
The process of changing from one key to another in a piece of music is called modulation . The most common modulations are modulations to closely related keys.
There are several methods that we can use to find closely related keys.
In case of a major key, find the subdominant and dominant chords, their relative minor keys and the relative minor key of the main key:

In case of a minor key, find the subdominant and dominant chords, their relative major keys and the relative major key of the main key:

Finding the II to VI degree of a major key:

Finding the III to VII degree of a minor key:

Closely related keys are neighbors in the circle of fifths:
