KEY and Major Scale


KEY and Major Scale


Today, I would like to talk about ” key ” and “scale”.

The first thing you need to know is the meaning of KEY .

KEY is the reference tone of the song.

Which sounds are arranged around which notes.

Next, the scale.

The scale is do,re,mi,fa,sol,la,ti,do.

The scale called do,re,mi,fa,sol,la,ti,do is called a Major scale , but in fact, there are proper rules for this major scale that you are humming.

It means that the width ( interval)of the note from note to sound is properly determined.

What does that mean?

The width of the sound written above, whole tone”1 step”, whole tone”1 step”, half tone “1/2step”, whole tone”1 step”, whole tone”1 step”, whole tone”1 step”, half tone “1/2step”

Arranging the sounds according to the width of this sound is the rule and rule of the major scale.

I think everyone has seen the score, but when you look at the score, the treble clef,

There are many ♯(sharp ) and ♭ ( flat ) clefs next to(called treble clef in English).

The work done by these “#” and “♭” is actually adjusting the interval so that it becomes a major scale rule.

Let me give you an example to make it easier to understand.

Let’s think about the standard sound with “re”.

Thinking of the reference sound as “re” means thinking of KEY as D.

If you arrange the scales based on the sound of “re”, it is re,mi,fa,sol,la,ti,do,re ,

Looking at this interval,

The order of the intervals is whole tone”1 step”, half tone”1/2 step”, whole tone”1 step”, whole tone”1 step”, whole tone”1 step”, half tone”1/2 step”, whole tone”1 step”. 

The rule of the Major scale interval is

whole tone, whole tone, half tone, whole tone, whole tone, whole tone, half tone .

Comparing the two, the order of the intervals is completely different.

Here, add “#” or “♭” to adjust the interval.

By adding “#” to “fa” and “do”

The width of the interval is now the same as the Major scale rule.

Therefore, in the score of KEY = D , the symbol “#” is written at the position of “fa” and “do” next to the treble clef.

When KEY is C , nothing such as ♯ or ♭ is attached next to the treble clef because the interval of do,re,mi,fa,sol,la,ti,do originally follows the rule.

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2020-4-18

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