Augmented Interval: An interval that is one semitone larger than a perfect or major interval, enhancing harmonic tension in music.
Context and Significance
In music theory, augmented intervals play a critical role in creating tension and resolution. They are commonly used in jazz, classical, and modern compositions to add complexity and depth to musical works. Augmented intervals are particularly useful in modulation, where they can smoothly link different keys. Musicians often incorporate them into melodies and harmonies to evoke a sense of drama or anticipation, making them a versatile tool across various musical genres.
Historical Background
The concept of augmented intervals has roots in Western classical music, dating back to the Medieval and Renaissance periods. They became more formally recognized during the Baroque era as composers explored richer harmonic languages. The use of augmented intervals expanded significantly in the Romantic period, where composers like Wagner and Liszt employed them to intensify emotional expression. This historical evolution showcases the interval’s enduring impact on musical innovation.
Examples
Augmented intervals are evident in many famous compositions. In Claude Debussy’s “Clair de Lune,” augmented intervals contribute to the piece’s ethereal quality. Jazz musicians frequently use augmented intervals in improvisation to create unexpected harmonic shifts. In modern music, guitarists often utilize augmented intervals for unique solo lines, as heard in the works of players like Joe Satriani and Steve Vai.
Related Terms:
Diminished Interval: An interval reduced by one semitone from a perfect or minor interval.
Tritone: An interval spanning three whole tones, often considered an augmented fourth.
Perfect Interval: A stable interval found in the perfect unison, fourth, fifth, and octave.
Major Interval: An interval that is one semitone larger than a minor interval.