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Second Inversion Chord – Definition
A second inversion chord, also known as a six-four chord, is a triad in which the fifth of the chord is the lowest note (the bass).
What is a Second Inversion Chord?
In a second inversion, the chord’s fifth is placed in the bass while the root and third are positioned above it. The term six-four chord comes from the intervals formed above the bass: a fourth and a sixth.
Although a second inversion contains the same notes as the root-position chord, it has a different harmonic function and is generally considered less stable. It is commonly used as a passing chord, pedal six-four, or cadential six-four in tonal harmony.
How is a Second Inversion Chord used in piano playing?
Pianists use second inversion chords to create smoother bass lines and more fluid harmonic movement between chords. They are especially useful for voice leading and for adding variety to chord progressions.
Understanding second inversions helps pianists recognize common harmonic patterns and perform chord progressions with greater musical flow and flexibility.