**Base scales**

**Inner structures of the base scales**

Inner structure of the basic scales

Inversed inner structure of the basic scales

Inner structure of the basic scales

Again, let's take a glance at these important scale structures. One-string scales is the way I'll describe them now because that's how you can perfectly see the inner structure of each basic scale.

Major

2 full steps - 1 half step - 3 full steps - 1 half step

Dorian

1 full step - 1 half step - 3 full steps - 1 half step - 1 full step

Phrygian

1 half step - 3 full steps - 1 half step - 2 full steps

Lydian

3 full steps - 1 half step - 2 full steps - 1 half step

Mixolydian

2 full steps - 1 half step - 2 full steps - 1 half step - 1 full step

Minor

1 full step - 1 half step - 2 full steps - 1 half step - 1 full step

Locrian

1 half step - 2 full steps - 1 half step - 3 full steps

In the Basic scales - F.A.Q section you will find further explanations on this subject.

Inversed inner structure of the basic scales

It once occurred that one of my students showed interest in learning the inner structures in an inverse way, which I then considered a very unique however not so important idea. The Ancient Greek musicians also employed the idea of inversed structures, i.e. they defined each scales and the corresponding notes pitch wise not upwards but downwards (more on this see section The origin of basic scales). Hence reversed basic scales prove to be useful after all. You will find helpful information on this in section Basic scales on one string. OSIRE will also be useful for modeling these scales.

So here's what you should know about inversed basic scales:

The
inverse of **Major** scale is **Phrygian** scale.

Explanation: the
structure of Major scale is **2 full steps - 1 half step - 3 full steps - 1
half step**, the inverse of which is **1 half step - 3 full steps - 1 half
step - 2 full steps** (Phrygian scale)

The **
Dorian** is identical to its inverse, as having a symmetrical inner
structure

The
inverse of **Phrygian** is **Major**

The
inverse of **Lydian** is **Locrian**

The
inverse of **Locrian** is **Lydian**

The
inverse **Mixolydian** is **Minor**

The
inverse of **Minor** is **Mixolydian**