Understanding Music Scales

Major and Minor Scales

A scale is a series of notes in alphabetical order.

Music Scales are divided into 2 kinds - Diatonic Scales and Chromatic Scales.

1. A diatonic scale is a seven‑note, octave‑repeating scale in which each note has a different letter name, built from a specific pattern of whole steps (tones) and half steps (semitones).

All diatonic scales — including major and natural, harmonic, and melodic minor — contain:

5 whole steps (tones)
2 half steps (semitones)

These steps are arranged in a way that creates the characteristic sound of the diatonic system.

Example: C diatonic scale

C - D - E - F - G - A - B - C (octave above the first C)
C Diatoniic Scale - Ascending & Descending

C Diatonic Scale - Ascending & Descending

2. A chromatic scale consists of semitones only. It contains 12 notes per octave, each one a semitone or half‑step apart.

Uses every pitch between the starting note and its octave
Can be written using sharps ascending and flats descending (traditional notation practice)

Example: C chromatic scale

C - C# - D - D# - E - F - F# - G - G# - A - A# - B - C ascending
C - B - Bb - A - Ab - G - Gb - F - E - Eb - D - Db - C descending

C Chromatic Scale - Ascending & Descending

Diatonic Scales are divided into 2 kinds:

Major Scales
Minor Scales

Major Scales

A Major Scale is a series of 8 notes in alphabetical order, containing 5 whole tones and 2 semitones. The 8th note is the same as the first note, but is one octave higher.

The 5 whole tones occur between the 1st-2nd, 2nd-3rd, 4th-5th, 5th-6th, 6th-7th notes of the scale.
The 2 semitones occur between the 3rd-4th and 7th-8th notes of the scale
ie. 1 (tone) – 2 (tone) – 3 (semitone) – 4 (tone) – 5 (tone) – 6 (tone) – 7 (semitone) – 8

The Step Method can be used to determine all Major Scales. Here are some examples using 3 variations.

Table 1:

Scale Notes	1st		2nd		3rd		4th		5th		6th		7th		8th
Whole / Half Steps		W		W		H		W		W		W		H
Tones / Semitones		T		T		S		T		T		T		S
Semitones		2		2		1		2		2		2		1
C Major Scale	C		D		E		F		G		A		B		C
G Major Scale	G		A		B		C		D		E		F#		G
D Major Scale	D		E		F#		G		A		B		C#		D
A Major Scale	A		B		C#		D		E		F#		G#		A

Minor Scales

Minor Scales consist of 3 scale patterns:

Natural Minor Scale - also referred to as the Aeolian mode
Harmonic Minor Scale
Melodic Minor Scale

In each of the Minor Scale patterns, the 1st, 3rd and 5th scale degrees form a minor triad, whereas in a major scale they form a major triad.

The first essential step is to learn the Natural Minor Scale. This will give you a solid foundation with a natural progression to understanding harmonic and melodic minor scales.

The Minor Scales page will give you a comprehensive look at each of these scales including different methods for calculating them along with examples.

The differences between the 3 minor scales:

1. Natural Minor Scale
Formula: 1 2 ♭3 4 5 ♭6 ♭7 8 (ascending and descending)

Diagram 1:

D Natural Minor Scale - Ascending & Descending

Step Method for Natural Minor Scales:

  W - H - W - W - H -  W - W
D - E - F - G - A - Bb - C - D

2. Harmonic Minor Scale
Formula: 1 2 ♭3 4 5 ♭6 7 8 (ascending and descending)

Diagram 2:

G Harmonic Minor Scale - Ascending & Descending

Step Method for Harmonic Minor Scales: (WH = Whole + Half = 3 semitones)

  W - H -  W - W - H - WH -  H
G - A - Bb - C - D - Eb - F# - G

3. Melodic Minor Scale
Formula:
1 2 ♭3 4 5 6 7 8 ascending
1 2 ♭3 4 5 ♭6 ♭7 8 descending.

Diagram 3:

A Melodic Minor Scale - Ascending & Descending

Because the Melodic Minor Scale has a different ascending/descending order we need 2 step-methods:

Step Method for Ascending:

  W - H - W - W - W -  W -  H
A - B - C - D - E - F# - G# - A

Step Method for Descending: same as Natural Minor Scale ascending and descending

  W - H - W - W - H - W - W
A - B - C - D - E - F - G - A

Please Note: The easiest way to write the notes for ascending and descending scales is to work from low to high in both directions:

Ascending: Start with the lower Tonic and finish on the upper Tonic (one octave higher), then apply the ascending scale pattern.
Descending: Start with the lower Tonic and finish on the upper Tonic (one octave higher), then apply the descending scale pattern.
Low to high in both directions makes the process less confusing.
Firstly, write the scale notes in ascending and descending order, then add the accidentals according to the relevant scale method — working from low to high.

Neat sweet and complete!

Rules for Music Scales

Sharps and Flats are used in the formation of scales to fix the correct position of the tones and semi-tones. This is how key signatures are formed.
Music Scales are related by their key signatures: Major to Minor and Minor to Major.
Every Major Scale has a relative Natural Minor Scale and every Minor Scale has a relative Major Scale
The Major scale and its relative Minor Scale share the same key signature. This means they share the same notes, but because they start at different places, they have a different step pattern and therefore a different sound.
To find a Relative Minor from a given Major, descend (count down) 3 semi-tones from the major, e.g., if you are in the key of A Major, count down 3 semitones from A - G# - G - F# — you are in the key of F# Minor.
To find a Relative Major from a given Minor, ascend (count up) 3 semi-tones from the minor, e.g., if you are in the key of Am, count up 3 semitones from A - A# - B - C — you are in the key of C Major.

Technical Names of Scale Degrees

Each note in a given music scale is given a technical name: A scale degree is the name given to each note of the scale in relation to the tonic or root note which is the first degree of a diatonic scale. The illustration below shows the names of the scale degrees in C Major.

Each scale degree can be described in several ways:

Interval from the tonic:
First, second, major or minor third, fourth, fifth, major or minor sixth, major or minor seventh
Roman Numerals:
I - II - III - IV - V - VI - VII - I (octave)
Arabic Numerals:
1 – 2 – 3 – 4 – 5 – 6 – 7 – 8 (octave)
Name and function:
Tonic, Supertonic, Mediant, Subdominant, Dominant, Submediant, Leading Tone / Subtonic, Tonic (Octave / Upper Tonic).

Scale Degrees

Degree	Name	Meaning	Notes in C
1st	Tonic	Tonal center / note of final resolution	C
2nd	Supertonic	One whole tone above the tonic	D
3rd (Maj/Min)	Mediant	Mid-way between the tonic and dominant	E/E♭
4th	Subdominant	A fifth below the tonic; mirrors the dominant, which is a fifth above	F
5th	Dominant	Second most important note after the tonic	G
6th (Maj/Min)	Submediant	A third below the tonic (mirrors the mediant, which is a third above)	A/A♭
7th (Maj/Min)	Leading Tone / Subtonic	Leading tone = a semitone below the tonic Subtonic = whole tone below the tonic	B/B♭
8th	Octave/Upper Tonic	Octave above the tonic; final point of resolution	C

In Summary:

Supertonic and Subtonic
One whole step above and below the tonic.
Mediant and Submediant
A third above and below the tonic.
Dominant and Subdominant
A fifth above and below the tonic.

I hope you enjoyed this session on Music Scales. For some of you, it may feel a little daunting at first — and that’s completely normal. Don’t give up. As you continue along this sometimes‑rugged path they call Theory, the pieces gradually fall into place.

When you practice next, ask yourself a few questions about the key you're in:
How many sharps or flats does it have?
Does the music sound happy or sad — and what in the scale or chords creates that feeling?

Major scales often sound bright and uplifting, while minor scales carry a natural sense of melancholy. Try playing them back‑to‑back and notice how your ear responds.

The same applies to Major & Minor chords. Play an A Major chord, then play an Am chord— feel how the mood shifts instantly. This is why music is so amazing: with just a change of key or chord quality, you can shape an entire emotional landscape.💕