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Lesson 29 - Dominant 7th Chord


I. Index


1.  Introduction
2. Constructing the Dominant 7th Chord
3. Playing the Dominant 7th Chord
4. Dominant 7th Chord in All 12 Keys
5. Conclusion


II. Content


1. Introduction
In this lesson, you will learn about the dominant 7th chord. The dominant 7th chord is basically a major chord with one extra note added, the minor 7th. Any time you see the V chord in any major key, you can substitue that chord with the dominant 7th chord (V7).


2. Constructing the Dominant 7th Chord
Playing the dominant 7th chord is easy. Just play a major chord, and add a note that is an interval of a minor 7th from the root note of the chord. Another way to think about it is by using a formula of half steps. Below is the formula for the dominant 7th chord.

Root + 4HS + 3HS + 3HS


3. Playing the Dominant 7th Chord
Let's take a look at the dominant 7th chord starting on C. This is called the C dominant 7th chord (C7). In the animation below, the notes of the C dominant 7th chord are first played separately, then together.










4. Dominant 7th Chord in All 12 Keys
You can play the dominant 7th chord in all twelve keys. Below is a chart of all 12 dominant 7th chords.

(Chart of all 12 dominant 7th chords)










5. Conclusion
In this lesson, you learned how to play the C dominant 7th chord. There is a dominant 7th chord for each of the 12 keys. Every time you see a V chord in songs, try substituting it with a dominant 7th chord (V7) instead.

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