ENTRY 9

THE 7th CHORDS

Part 1

* The 7th chord is made-up of an additional note above the triad, the notes arranged with an interval of a third between them. The distance between each third determines the chord quality. There are five types of 7th chord qualities that I will explain along with how they are arranged.

* Beginning with the 'major minor 7th', this is also the dominant 7th chord, it is identified as Mm7 or by using the 'letter name' of the root note before the number 7, e.g. C7. From the root note, this chord has a major triad and a minor 7th. This chord is diatonic of the 5th degree in major-scales and also the 5th degree in minor-scales. 

* The 'major, major 7th' chord is identified as Maj7 or by using the 'letter name' of the root note before with M7. This chord has a major triad and a major 7th from the root. This chord is diatonic of the 1st and 4th degree in major-scales and the 3rd and 6th degree in minor-scales.

* The 'minor, minor 7th' chord is identified by the 'letter name' of the root note before m7. From the root note, this chord has a minor triad and a minor 7th. This chord is diatonic of the 2nd, 3rd and 6th degree in major-scales and the 1st and 4th degree in minor-scales. 

* The 'diminished minor 7th' chord is also known as half-diminished 7th and identified by the 'letter name' of the root note before 𝆩7. This chord from the root note consists of a diminished triad and a minor 7th. This chord is diatonic of the 7th degree in major-scales and the 2nd degree in minor-scales.

* Finally, the 'diminished, diminished 7th' chord is identified by the 'letter name' of the root note before 𝆬7. This is made up of a diminished triad and a diminished 7th above the root. This chord is diatonic for 7th degree in the minor-scales.     

     Examples of Various 7th Chords 

& 

There Arrangements 

This is a performance of the 7th chord in the diatonic key of B♭ major and G minor.

This Is A Performance of The 7th Chord In The Diatonic Key of A Major and F♯ Minor.

Identification of the Seventh Chord.

Using The 7th Chords Along With Solfege For Ear Training.