The augmented seventh chord, or seventh augmented fifth chord, or seventh sharp five chord is a seventh chord composed of a root, major third, augmented fifth, and minor seventh (1, 3, ♯5, ♭7). It can be viewed as an augmented triad with a minor seventh.
The augmented seventh chord, or seventh augmented fifth chord, or seventh sharp five chord is a seventh chord composed of a root, major third, augmented fifth, and minor seventh (1, 3, ♯5, ♭7). It can be viewed as an augmented triad with a minor seventh.
Source: Wikipedia "Augmented seventh chord" · CC BY-SA 4.0
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