Harmonic minor scale degrees III.

The infinite harmonic minor scale

 

The infinite scales concept was first introduced in relation to the basic scales (in the Infinite basic scales section), and then other scales, such as the pentatonic scales. The key idea of the infinite scale concept is that the scale structures of any stringed instrument, including the guitar, can be extended to infinite imaginary strings.

 

Let's categorize the ways of graphically demonstrating scale structures:

 

1. Scale degrees

For example, the first degree of the A harmonic minor scale:

 

 

2. Full scale structure

For example, all the notes the A harmonic minor scale:

 

 

3. Infinite scale structure

An infinite scale could be started from any desired note on the fret board. In the below mirror image, the first degree of an A harmonic minor is the starting point.

 

 

The whole scale structure is made up using intervals of fourths between the strings. The scale carries on to the next string downwards, pitch wise upwards.

 

Please note: the starting note is not relevant at all as the scale structure remains the same regardless of the starting note.

 

Bear in mind that string thicknesses may appear unrealistic due to a software limitation.

 

 

The key characteristics of this giant scale structure:

 

  • Virtually, 7 strings are enough to make a representative piece of an infinite harmonic minor scale. Consequently, the number of strings needed to make an 'infinite' scale structure is the same as the number of notes the scale contains. (This is why the giant structure is made up of seven-string mirror images)

  • The same phenomenon is apparent here as what you have seen in the infinite scale structure of the basic scales; this is the notes structure with the interval of fourths between the strings, the only exception that these notes structures only contain four notes, as opposed to seven notes in the basic scale structure:

  • Also, there is another kind of note structure, consisting of the previous note structure and other notes:

  • It is also apparent that the infinite harmonic minor scale structure is gripping to the right, as opposed to the pentatonic minor. This is probably because the harmonic minor scale contains more notes than the pentatonic minor scale. This gripping of the scale structure to the right creates another note structure; the so-called adhesive tape consisting of augmented fourths, which is the same structure as seen in the infinite basic scale structure. What's more, there are not just one but two of these adhesive tapes!

  • As you can see, the duplicate (the lower) of the original adhesive tape (the upper), contains the altered seventh scale degree (in the case of an A harmonic minor it is a G sharp). In fact, the altered seventh scale degree is the reason for the duplication.

What would a full infinite scale structure look like then?

 

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