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Minor Subdominant – Definition
The minor subdominant is a borrowed iv chord used in a major key. It is created by changing the major IV chord into a minominor chord, producing a richer, more emotional harmonic color.
What is the Minor Subdominant?
In the key of C major, the normal subdominant is F major (F–A–C). The minor subdominant is F minor (F–Ab–C), borrowed from the parallel minor key. This borrowed chord introduces a distinctive bittersweet sound and creates a strong pull back toward the tonic.
The minor subdominant is a common example of modal mixture (also called chord borrowing) and appears frequently in pop, rock, film music, and classical music.
Why is the Minor Subdominant important for pianists?
The minor subdominant is an effective way to add emotion and harmonic variety to familiar chord progressions. It often appears near the end of a phrase or just before the final tonic chord, creating a memorable and expressive resolution.
Understanding this borrowed chord gives pianists another powerful tool for arranging, reharmonizing, and adding color to songs without changing the melody.