The Doubled Leading Tone in a Student Chorale Analysis
Mr. Alvarez's AP Music Theory class is analyzing an eight-measure chorale-style phrase in G minor. Priya, a strong student, submits this analysis: m.1 i; m.2 iv6; m.3 'V7 in root position'; m.4 i6. Her m.3 voicing, from bass up, is C–F#–D–F#. She says she 'hears D as the root,' so she wrote a root-position label, and she notes that the phrase 'sounds unfinished' at m.4. The teacher's key lists m.3 as V4/2 and m.4 as i6. Mr. Alvarez has 25 minutes of class before the unit test, and his department expects students to justify every Roman numeral with both root and bass. He is unsure whether to mark the doubled F# as a part-writing error, a labeling error, or both, and whether to spend test-review time on it.
1. Evaluate Priya's m.3 label and her voicing. What is the chord, and what are the two separate problems in her answer? Explain the reasoning a teacher should model.
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The chord is a dominant seventh with the seventh in the bass, not a root-position V7. In G minor the V7 is D–F#–A–C. Priya's bass is C, so the chord is V4/2; the figures are not decoration, they encode which chord member is in the bass. 'V7' unqualified implies D in the bass. Her harmonic function is correct, but the label is incomplete in a way that matters for voice leading: the bass C must resolve down to B♭, while the leading tone F# must resolve up to G.
The second problem is independent: she doubles the leading tone. In strict chorale style, the leading tone is rarely doubled, because both F#s would need to resolve to G, producing a doubled resolution and often parallel unisons or octaves. She also omits the fifth (A), which is acceptable; omitting the fifth is common in seventh chords. So the teacher should separate 'right function, wrong inversion label' from 'voice-leading error.' Her comment that m.4 sounds unfinished is perceptive: m.4 is i6, not root-position i, so the bass does not close on G. That is an evaded rather than final cadence.
2. Given 25 minutes before the test, how should Mr. Alvarez respond instructionally? Include what he should grade and what he should change on the test.
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Do not spend the 25 minutes re-teaching every seventh chord. Use this as a short, focused cycle: (1) have students sing the bass line C–B♭ and the soprano F#–G against it, then sing the inner voices; (2) ask pairs to explain why the label 'V7' and the bass C cannot both be right; (3) show the two corrections on the board, one labeled 'inversion' and one labeled 'doubling'; (4) have Priya revise her own measure aloud. Keep her error anonymous when using it with the class, and speak to her privately if needed.
For grading, use separate rubric rows: Roman numeral/function, inversion/figures, and part-writing. Priya should receive credit for identifying dominant function and for hearing the evaded cadence, with a deduction for the missing inversion figure. On the test, add one item that requires a one-sentence justification-'label and explain the bass and the seventh'-so students cannot pass by memorizing root-position labels. That change aligns the assessment with the department expectation and gives you evidence beyond the final answer.
3. If the class uses this phrase as a part-writing model, propose a revision of m.3 that keeps the soprano F# and bass C but fixes the voice-leading problem. Explain why your revision works and note one stylistic caveat.
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Keep bass C and soprano F#, and re-voice the inner voices. One clean solution is bass C, tenor D, alto A, soprano F#. The leading tone now appears once; the root D is doubled, which is acceptable; the seventh C resolves down to B♭; F# resolves up to G; A can move to G or B♭. Check the approach and resolution for parallel fifths and octaves before accepting it. A second option is C–D–D–F#, omitting the fifth and doubling the root; this is also standard in strict style.
The caveat is stylistic. The doubled leading tone is not a universal law; it appears in later tonal music, in inner voices, and in textures where the resolution is handled carefully. In a chorale-style model, however, the norm is to avoid doubling the leading tone because it weakens the tendency of F# to resolve to G. The revision should therefore be presented as a style-specific choice, not as an absolute rule, and students should sing the revised version to hear the difference.