Revising an Abrupt Sonata Transition
A high school theory student composes a 24-measure sonata exposition in C major. The first theme ends on a half cadence in m. 8. The transition (mm. 9–14) moves to G major by repeating a C-major chord for two measures, then jumping directly to a D-major chord for two measures, and ending on a G-major chord. The second theme (mm. 15–24) is in G major. The teacher notes that the transition sounds abrupt and that the D-major chord arrives too early. The student wants to keep the second theme unchanged and has four days before the portfolio is due. The assignment requires a convincing tonal transition, not a modulation by brute force.
1. Analyze the harmonic problem in the transition and explain why the D-major chord sounds premature.
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The transition jumps from a static C-major prolongation directly to D major, which is the dominant of G. In a classical-style transition, the new dominant should usually arrive near the end of the transition, after the listener has been oriented toward the new key. Here D major appears two measures into a six-measure transition, so it tonicizes G too early and makes the subsequent G chord sound like a delayed resolution rather than a goal. The repeated C major also does not prepare the modulation; it simply stops one key and starts another. The result is a harmonic seam. A stronger transition would use a pivot chord or a sequence to gradually reinterpret a chord common to both keys, then introduce D major only in the final approach to the second theme.
2. Propose a revised harmonic plan for mm. 9–14 that keeps the second theme unchanged.
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Keep mm. 9–10 on C major but use them to establish a departure, perhaps with a rising bass line or a sequence. In mm. 11–12, introduce A minor as a pivot: it is vi in C major and ii in G major. From A minor, move to D major in m. 13, but treat D major as the new dominant rather than as an isolated arrival. In m. 14, prolong D major with a cadential approach, then resolve to G major at m. 15 for the second theme. Alternatively, use E minor as iii in C and vi in G, followed by A minor and then D major. Either plan gives the listener a stepwise reinterpretation of a common chord, delays the new dominant, and preserves the second theme exactly as written.
3. The student says, 'But D major is the dominant of G, so it should be fine.' Write a response that evaluates this claim and gives a practical four-day revision schedule.
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D major is indeed the dominant of G, but harmonic function alone does not make a transition convincing. A dominant chord can be introduced too early, before the listener has been prepared to hear G as the new tonic. The issue is not the chord's identity but its placement and preparation. For the four-day schedule: Day 1, sketch two pivot-chord options at the keyboard and choose the one with the smoothest bass line. Day 2, rewrite mm. 9–14 and play the transition into the unchanged second theme. Day 3, check the voice leading, especially the motion into D major, and make sure the half cadence in m. 8 still connects. Day 4, record the exposition, listen for the moment when G begins to feel like tonic, and revise only the transition. Do not rewrite the second theme.