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Phrase boundaries present voice-leading challenges and opportunities. Smooth connection between phrases is achieved through careful voice leading into and out of cadences; internal phrase rhythm affects how voices move within the phrase.
Analyze phrase boundaries in classical pieces; compose multi-phrase progressions with attention to cadential voice leading and phrase transition.
You've worked through voice-leading at the chord level — how individual voices move from one chord to the next, how tendency tones resolve, and how cadential formulas conclude phrases. You've also studied cadence preparation: how the harmonic approach to a cadential chord is shaped, with particular attention to the penultimate harmony. The new dimension here is scale: how voice-leading and phrase rhythm interact across multiple phrases, not just across adjacent chords.
Think of a phrase as having an arc: it begins from relative stability, moves through harmonic motion, and concludes at a cadence. Voice-leading governs the moment-to-moment motion within that arc — how each voice connects one chord to the next. Phrase rhythm describes something related but distinct: the rhythmic character of the phrase as a whole unit — how many measures it spans, where harmonic activity clusters within it, whether its pacing expands or contracts, and how it relates in time to the phrases around it.
The connection becomes critical at phrase junctures — the boundaries where one phrase ends and the next begins. After a cadence, voice-leading must navigate two competing demands: closure (the preceding phrase has ended, voices want to settle) and continuation (the next phrase must launch with forward energy). In weaker cadences like the half cadence, the voice-leading deliberately withholds complete resolution — certain voices maintain tension and flow naturally into the next phrase. In strong perfect authentic cadences, all voices converge to the tonic; the following phrase must re-establish departure by reintroducing harmonic motion, often by leaving the bass or a melodic voice in motion rather than sustaining all voices on the tonic.
The most instructive case is the antecedent-consequent phrase pair. The antecedent ends with a half cadence — a point of pause, not resolution. Voice-leading keeps certain tendencies active: the leading tone may not resolve, or a soprano voice may rest on the fifth rather than the tonic. These suspended tendencies give the antecedent its "question" quality. The consequent then carries forward those unresolved tendencies and satisfies them at the authentic cadence. Voice-leading continuity between phrases — the sense that the second phrase picks up where the first left off — is what binds phrase pairs into a connected musical thought rather than two independent statements.
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