Sequence

Definition

In music, a sequence is a repetition of a musical motif or phrase at different pitch levels, creating a pattern of ascending or descending intervals. This technique enhances thematic development and can be applied in various harmonic contexts, often reinforcing structure and coherence in composition.

5 Must Know Facts For Your Next Test

1. Sequences can be classified as melodic or harmonic, with melodic sequences focusing on patterns in pitch and harmonic sequences involving chord progressions.
2. They often enhance the emotional impact of a piece by creating a sense of continuity and forward motion through repetition.
3. Composers frequently use sequences to develop themes, allowing for variations and transformations while maintaining recognizable elements.
4. Common types of sequences include ascending sequences, descending sequences, and sequence with chromatic alterations.
5. In Roman numeral analysis, sequences are often notated using the same numerical pattern but transposed to reflect their new pitch levels.

Review Questions

• How does the use of sequences contribute to the overall structure and coherence of a musical composition?
  • Sequences contribute significantly to the structure and coherence of a composition by providing a sense of unity through repetition. When a motif or phrase is transposed to different pitch levels, it creates familiarity while simultaneously developing the musical idea. This method allows composers to explore variations and contrasts within their work, making the piece more engaging and dynamic while retaining its thematic essence.
• Analyze how sequences can be identified and represented in Roman numeral analysis.
  • In Roman numeral analysis, sequences are represented by following the same numerical pattern across different keys. For instance, if a sequence starts on I and moves to IV in one key, this pattern would maintain its structure when transposed to another key. This notation helps identify how harmonic progressions relate to each other through sequences and allows for an understanding of the overall progression within the piece.
• Evaluate the role of sequences in theme development, particularly in contrasting melodic contours and emotional expressions.
  • Sequences play a crucial role in theme development by allowing composers to manipulate melodic contours and emotional expressions. By repeating motifs at varying pitch levels, composers can create tension or resolution depending on the context. This technique not only enriches thematic material but also provides opportunities for contrast—enabling composers to evoke different feelings while maintaining cohesion within their work. The strategic use of sequences can transform simple ideas into complex musical narratives.

Related terms

Motif: A short, recurring musical idea that serves as a building block for a larger composition, often established at the beginning of a piece.

Transposition: The process of changing the key of a musical passage while maintaining its original intervals and relationships between notes.

Harmonic Progression:

A series of chords played in sequence, creating a sense of movement and resolution within a piece of music.