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The most commonly used triads form major chords and minor chords. All major chords and minor chords have an interval of a perfect fifth between the root and the fifth of the chord. A perfect fifth (7 half-steps) can be divided into a major third (Major and Minor Intervals) (4 half-steps) plus a minor third (Major and Minor Intervals) (3 half-steps). If the interval between the root and the third of the chord is the major third (with the minor third between the third and the fifth of the chord), the triad is a major chord. If the interval between the root and the third of the chord is the minor third (and the major third is between the third and fifth of the chord), then the triad is a minor chord. Listen closely to a major triad and a minor triad.
Example
![media/image204.png](http://www.opentextbooks.org.hk/system/files/resource/2/2180/2338/media/image204.png)
Example
![media/image205.png](http://www.opentextbooks.org.hk/system/files/resource/2/2180/2338/media/image205.png)
Exercise 5.3
Write the major chord for each root given.
![media/image206.png](http://www.opentextbooks.org.hk/system/files/resource/2/2180/2338/media/image206.png)
Exercise 5.4:
Write the minor chord for each root given.
![media/image207.png](http://www.opentextbooks.org.hk/system/files/resource/2/2180/2338/media/image207.png)
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