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The Baroque period, spanning from approximately 1600 to 1750, was a time of rich musical innovation. One of its defining features was the use of continuo, a form of accompaniment that provided harmonic support and structure to compositions. Understanding the common harmonic progressions used in continuo playing offers insight into the music of this era and its expressive qualities.
Introduction to Baroque Continuo
The continuo, also known as basso continuo, typically involved a bass instrument such as the cello or bassoon, combined with a chordal instrument like the harpsichord or organ. The performer would realize the harmonic structure based on figured bass notation, which indicated the chords to be played over the bass line.
Common Harmonic Progressions
Baroque composers and performers frequently employed certain harmonic progressions that became characteristic of the style. These progressions helped create the sense of movement and emotional expression typical of the period.
I – V – I Progression
The most fundamental progression in Western music, the I–V–I, establishes a strong tonal center. In the key of C major, this would be C major – G major – C major. It provides a sense of resolution and stability, often used at the beginning or end of a phrase.
ii – V – I Progression
This progression introduces a pre-dominant chord, the ii, before moving to the dominant V and resolving to the tonic I. It creates a smooth, natural flow and is frequently used in cadences and transitions.
IV – V – I Progression
The IV–V–I progression, known as the plagal to authentic cadence, provides a sense of completeness. In C major, this would be F major – G major – C major. It often appears at the end of sections to affirm the key.
Other Notable Progressions
While the progressions above are most common, Baroque continuo music also features variations and more complex patterns, including:
- V – vi – V – I (used for expressive effect)
- I – vi – IV – V (common in chorale harmonizations)
- Modulatory progressions that shift the tonal center
Conclusion
Understanding these harmonic progressions provides valuable insight into the structure and emotional language of Baroque continuo music. Performers and students alike benefit from recognizing these patterns, which underpin much of the period’s expressive power and musical coherence.