Questions: Voice Leading Basics

Question 1

When moving from a C major chord to an F major chord, which voice motion approach generally produces the smoothest result?

• A. Move every voice by the largest interval possible
• B. Keep common tones stationary and move other voices by step
• C. Always move all voices in the same direction (parallel motion)
• D. Double the third of the new chord in all voices

Answer: (B)

Smooth voice leading minimizes motion. C major (C-E-G) and F major (F-A-C) share C as a common tone — that voice can stay put. The remaining voices move by small intervals: E moves up a half step to F, and G moves up a whole step to A (or down). This creates efficient, smooth connections. Moving all voices by large intervals produces clunky, disjunct bass and soprano lines.

Question 2

In traditional voice leading, nearly every voice is expected to move to a different pitch when changing from one chord to the next — staying on the same note is considered poor technique.

• T. True
• F. False

Answer: False

Holding a common tone between two chords is often the ideal voice leading choice. If a pitch belongs to both chords, keeping that voice stationary reduces overall motion and creates a smooth connection. The goal is to minimize unnecessary motion — not to move for the sake of moving. Parallel 5ths, not held tones, are the primary concern to avoid.

Question 3

What makes parallel fifths problematic in traditional four-part voice leading, and why does the rule against them exist?

Model answer: Parallel fifths occur when two voices both move in the same direction by the same interval, maintaining a perfect fifth between them. The problem is perceptual: perfect fifths fuse strongly in acoustic timbre, and when two voices move in parallel fifths they begin to sound like a single, blended voice rather than two independent lines. Traditional voice leading aims to maintain the independence of each voice, so parallel fifths undermine that goal. The prohibition is especially strong because fifths and octaves are the most acoustically fused intervals.

It helps to understand the rule historically: in Renaissance and Baroque polyphony, independent voice lines were the artistic goal. Parallel fifths collapse that independence. In modern pop and jazz, parallel fifths are common and intentional — the rule applies specifically to the common-practice style being studied.