Dominant seventh chord

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Published on Feb 20, 2021
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So, the Dominant seventh chord or D7 for short. What is it? To understand what kind of chord it is, I suggest recalling what a seventh chord is. A seventh chord is a chord consisting of four sounds arranged in thirds. The extreme sounds of the seventh chord form the interval of a seventh, hence the name of the chord. The seventh chord is designated by the number 7. Each sound of the seventh chord has its own name: the lower one is the prime, the second one is the third, the third one is the fifth, the upper one is the seventh. Quite a large number of different seventh chords are used in music. The most common seventh chord is built in major and harmonic minor on the fifth degree. It is called the dominant seventh chord or D7 for short. The dominant seventh chord consists of a major triad with the addition of a minor third at the top (or b3 + m3 + m3). The D7 chord is unstable and requires resolution. D7 resolves into an incomplete tonic triad with a tripled main (lower) sound. The three upper sounds resolve according to modal gravity, and the lower one goes up by a jump of a fourth to the first degree. The dominant seventh chord sounds major and a little dissonant. Don't forget to subscribe to the channel and like it, and also subscribe to our social networks https://vk.com/solfeggio_online / 766619894136562

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