Questions: Voice-Leading as Expression of Harmonic Function

Question 1

A composer wants to maximize the feeling of dominant tension in a V7 chord before resolving to tonic. Which voice-leading choice most directly expresses dominant function?

• A. Double the fifth of the V7 chord in two voices for added resonance
• B. Resolve the leading tone upward by half step to scale degree 1, and the seventh downward by half step to scale degree 3
• C. Move all four voices in parallel motion to the tonic chord
• D. Approach the V7 from the subdominant with a sustained bass pedal

Answer: (B)

Dominant function IS the voice-leading pressure of the V7 chord: the leading tone (scale degree 7) is a half step below tonic and pulls upward; the seventh (scale degree 4) is a half step above the mediant and pulls downward. These are the unresolved melodic tendencies that create the chord's tension. Resolving them correctly doesn't just follow a rule — it enacts dominant function. Doubling the fifth, parallel motion, or bass approach do nothing to strengthen these specific tendencies.

Question 2

A student argues that voice-leading rules (avoid parallel fifths, prefer stepwise motion) are stylistic constraints that can be set aside when the harmonic function is already clear from the chord labels. What does the key insight of this topic reveal about that view?

• A. The student is right — experienced composers routinely ignore voice-leading rules without harmonic consequence
• B. Voice-leading rules are historical conventions specific to common-practice style and have no functional meaning
• C. Voice leading is not separate from harmonic function — it is the mechanism by which function becomes audible, so 'ignoring' it changes the harmonic meaning itself
• D. Voice-leading rules only apply in four-part chorale texture and are irrelevant in other musical contexts

Answer: (C)

The insight of this topic is that harmonic function and voice leading are the same phenomenon seen from different angles. Dominant function doesn't exist independently of the leading tone's pull and the seventh's resolution tendency — those melodic pressures ARE what dominant function means. If you 'ignore' voice leading, you don't preserve harmonic function while dropping stylistic constraints; you change the harmonic meaning. A V7 with its tensions left unresolved or poorly resolved sounds ambiguous or weak, not 'functionally clear but voice-leading-free.'

Question 3

The dominant seventh chord's sense of tension arises primarily from its volume, register, and rhythmic placement rather than from the specific melodic tendencies of its individual notes.

• T. True
• F. False

Answer: False

The tension of the dominant seventh chord arises specifically from two voice-leading tendencies: the leading tone (a half step below tonic) pulling upward, and the seventh (a half step above the mediant) pulling downward. The tritone these two notes form between them is the acoustic signature of dominant function, and its instability is directly traceable to those unresolved half-step tendencies. Register and rhythm can affect emphasis, but the fundamental tension is a property of the specific notes and their melodic inclinations.

Question 4

When a chord is harmonically ambiguous — the same notes could carry more than one functional label — its function can often be determined by observing how its voices actually resolve.

• T. True
• F. False

Answer: True

A diminished seventh chord, for example, is enharmonically symmetrical and can resolve convincingly to multiple tonal centers depending on which way its voices move. A fully diminished seventh resolving with the leading tone rising to tonic functions as V7 in disguise; the same chord with different voice resolution signals a different function. Because voice leading and harmonic function are expressions of the same phenomenon, observing the resolution is observing the function — not inferring one from the other.

Question 5

Explain why voice leading and harmonic function are not two separate systems, but the same phenomenon viewed from different angles.

Model answer: Harmonic function describes what a chord does — creates tension (dominant), releases it (tonic), or points toward tension (subdominant). Voice leading describes how individual voices move between chords. These descriptions are inseparable because the reason a dominant chord sounds tense is precisely that its notes are under voice-leading pressure: the leading tone must resolve up by half step, the seventh must resolve down by half step. That unresolved melodic tension IS dominant function. Choosing dominant function means choosing those voice-leading tendencies; they are one decision, not two.

The practical consequence is significant: when composing, you cannot first choose harmonic labels and then separately choose voice leading. The two choices are made simultaneously. And in analysis, understanding what a chord does harmonically means understanding why its voices move as they do — the labels and the lines are two descriptions of one musical reality.