Questions: Seventh Chord Resolution and Voice Leading

Question 1

When a dominant seventh chord (V7) resolves to the tonic (I), which voice-leading motion is obligatory for the seventh of the chord?

• A. The seventh rises by step to the root of the tonic chord
• B. The seventh resolves downward by step to the third of the tonic chord
• C. The seventh may move in any direction as long as parallel fifths are avoided
• D. The seventh is doubled in the tonic chord and can resolve in either direction

Answer: (B)

The seventh always resolves downward by step — this is the fundamental rule of seventh chord voice leading. In G7 resolving to C major, the seventh (F) falls by step to E, the third of the tonic. This downward resolution reflects the dissonant status of the seventh: it was added above the consonant triad, creating tension that the ear resolves by moving toward the nearest stable tone below. Rising resolution moves away from the stability the dissonance is pulling toward.

Question 2

A student says that a half-diminished seventh chord (ii°7) resolves 'just like a minor seventh chord.' What is the key error in this claim?

• A. The student is correct — both chord types have identical voice-leading requirements
• B. The half-diminished chord contains two dissonant intervals (tritone and minor seventh) that both require simultaneous resolution, creating a stronger sense of release than a simple minor seventh
• C. The half-diminished chord cannot resolve to V; it must resolve directly to I
• D. The half-diminished chord's resolution is identical to a dominant seventh chord, not a minor seventh

Answer: (B)

The half-diminished seventh chord (ø7) has a diminished fifth (tritone) in addition to the minor seventh — two dissonant intervals requiring simultaneous resolution. The tritone contracts inward (diminished fifth → major third) while the seventh falls by step. A minor seventh chord has only the minor seventh to discharge. The double dissonance of the half-diminished is what makes ii°7–V in minor sound so gravitationally compelling — the buildup and release is more intense than the equivalent progression in major.

Question 3

A fully diminished seventh chord can resolve convincingly to four different tonic chords because its notes are related by equal minor-third intervals, making it enharmonically equivalent at multiple pitch levels.

• T. True
• F. False

Answer: True

This is the defining special property of fully diminished seventh chords. Built from stacked minor thirds, respelling any one note enharmonically makes it function as the leading tone of a different key. C#–E–G–Bb can be respelled to resolve to four different targets depending on which voice is treated as the leading tone. Nineteenth-century composers exploited this for rapid modulations: the same chord, respelled, pivots to a completely new key. The flexibility arises directly from the equal-interval symmetry.

Question 4

The seventh of a seventh chord may resolve upward when the chord is in inversion, since inversion changes which interval appears at the top of the texture.

• T. True
• F. False

Answer: False

The downward resolution of the seventh is a rule about voice-leading obligation — it applies to whichever voice carries the seventh, regardless of register or inversion. Inversion changes the bass note and the spacing of voices, but it does not change which interval is dissonant or which direction resolves it. The seventh's obligation to move downward by step is independent of its register. Voice-leading analysis tracks individual voices, not just the top of the texture.

Question 5

Why does the seventh of a seventh chord resolve downward by step? What is the structural reason this direction is obligatory?

Model answer: The seventh is added above the consonant triad, creating a dissonance with the chord tone immediately below it. Resolving downward by step moves the seventh to the nearest consonant tone below — the smallest motion that discharges the tension. Upward motion would move away from that nearest consonance, maintaining or increasing tension rather than releasing it. The rule captures the voice-leading principle that dissonances resolve toward consonance by the most economical step.

The deeper principle is that dissonances in tonal harmony are 'prepared' and 'resolved': a voice enters a seventh chord as a consonance, becomes dissonant within it, then moves by the smallest step to restore consonance. Downward by step is almost always that smallest path. The direction is not arbitrary convention — it follows from the geometry of the chord: the seventh was added *above* the triad, so it sits above the nearest resolution target and must descend to reach it.