AUGMENTED SEVENTH CHORD Meaning and
Definition
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An augmented seventh chord is a musical term that refers to a four-note chord consisting of a root note, a major third, an augmented fifth, and a minor seventh above the root. It is represented by the abbreviation "Aug7" or "+7". This chord is formed by taking a major seventh chord and raising the fifth interval by a semitone to make it augmented.
The root note of the augmented seventh chord establishes its tonal center, while the major third interval adds a bright and tense quality to the chord. The augmented fifth, also known as a sharp fifth or raised fifth, further intensifies the chord's dissonance, creating a distinctive and unstable sound. Finally, the minor seventh interval above the root provides a sense of tension and resolution.
Augmented seventh chords are mainly used in dominant functions, commonly functioning as a dominant seventh chord with an augmented fifth. They introduce a lot of tension and instability, often leading to a resolution to a chord with a more stable sound. This chord is frequently utilized in jazz, blues, and contemporary classical music to add color and harmonic complexity to compositions.
Overall, the augmented seventh chord combines dissonance and tension to create a unique and expressive musical chord that enriches harmonic progressions and adds interest to musical arrangements.
