Augmented triad

Definition

An augmented triad is a type of chord that consists of three notes: the root, the major third, and the augmented fifth. This unique structure creates a distinct sound, often described as bright and tense, which can convey a sense of instability or longing. The augmented triad can be built on any note, making it versatile in various musical contexts, and is important for understanding chord progressions and harmony.

5 Must Know Facts For Your Next Test

1. An augmented triad is built from the root note, a major third above the root, and an augmented fifth, which is one half step higher than a perfect fifth.
2. The augmented triad can be represented by the scale degrees 1, 3, and raised 5 when constructed from a major scale.
3. When notated in Roman numeral analysis, an augmented triad built on the tonic would be represented as I+.
4. Augmented triads can create tension within a progression and often resolve to stable chords like major or minor triads.
5. These chords are commonly used in various genres such as jazz and classical music to enhance harmonic richness.

Review Questions

• Compare and contrast an augmented triad with other types of triads, such as major and minor triads, focusing on their construction and sound characteristics.
  • An augmented triad differs from major and minor triads primarily in its interval structure. A major triad consists of a root, major third, and perfect fifth, while a minor triad has a root, minor third, and perfect fifth. The augmented triad includes the root, major third, but has an augmented fifth instead of a perfect fifth. This alteration gives it a brighter and more tense sound compared to the stable nature of major and minor triads. Understanding these differences helps musicians choose the appropriate chord for emotional expression in their compositions.
• Discuss how an augmented triad functions in harmonic progressions and why it is often used to create tension in music.
  • In harmonic progressions, an augmented triad serves as a way to build tension due to its unstable sound. Because it contains an augmented fifth, this chord creates a feeling of anticipation that often seeks resolution. Musicians frequently use augmented triads to transition into more stable chords like major or minor triads. By incorporating these chords into progressions, composers can effectively manipulate emotions and dynamics within their pieces.
• Evaluate the role of augmented triads in contemporary music styles compared to traditional classical harmonies.
  • In contemporary music styles like jazz and pop, augmented triads play a crucial role in adding color and complexity to harmonic structures. Unlike traditional classical harmonies that might use them sparingly for tension resolution, contemporary styles embrace the unique sound of augmented triads more liberally. This shift allows for innovative chord progressions that break from conventional patterns. As composers explore different genres, they leverage augmented triads not only for tension but also for creative expression and emotional depth in their works.

Related terms

triad: A triad is a three-note chord formed by stacking two intervals of a third, creating a root, third, and fifth.

augmented interval: An augmented interval is one half step larger than a perfect or major interval, often contributing to the sound of an augmented triad.

chord inversion: Chord inversion refers to the arrangement of the notes in a chord so that the lowest note is not the root, affecting its harmonic function and sound.