Now we must sort out a different matter altogether, and this is the question of the “relative” minor. The relative minor of a major scale is simply the Aeolian mode of that scale. (either in its original form – “natural minor”, or in its modified forms: “melodic minor” and “harmonic minor”). Simply go to the 6th note of the major scale, consider that as the first note of the minor scale and
using exactly the same notes build a scale. If you leave it as it is, you will have the “natural minor” scale which is not very used. If you sharp the 6th and 7th note when ascending but leave the notes untouched when descending you have the “melodic minor” form of the scale. If you sharp the 7th note on both ascending and descending you have the “harmonic form” of the minor scale.
Let us give some examples:
[continued from previous post]
C major scale: C – D – E – F – G – A – B – C (1 – 1- ½ - 1 – 1 – 1 – ½ )
To find the
relative minor go to the 6th note (A) and start the scale from there:
A minor (natural) scale: A – B – C – D – E – F – G – A (1 – ½ - 1 – 1 – ½ - 1 – 1)
To get the melodic form sharp the 6th (F) and 7th (G) note of this new scale when ascending, but not when descending:
A minor (melodic form): ascending - A – B – C – D – E – F# - G# - A
(1 – ½ - 1 – 1 – 1 - 1 – ½)
Descending – A – G – F – E – D – C – B – A (1 – 1- ½ - 1 – 1- ½ - 1)
To get the harmonic form sharp the 7th note (G) both ascending and descending:
A minor (harmonic form): A – B – C – D – E – F – G# - A (1 – ½ - 1 – 1 – ½ - 1+1/2 – ½)
Ok. Now let us see another scale, for instance D major:
D major scale: D – E – F# - G – A – B – C# - D (1 – 1- ½ - 1 – 1 – 1 – ½ )
To find the
relative minor go to the 6th note (B) and start the scale from there:
B minor (natural) scale: B – C# – D – E – F# – G – A - B (1 – ½ - 1 – 1 – ½ - 1 – 1). Notice that B minor uses exactly the same notes as D major: they share the key signature of F# and C#.
To get the melodic form sharp the 6th (G) and 7th (A) note of this new scale when ascending, but not when descending:
B minor (melodic form): ascending - B – C# – D – E – F# - G# - A# - B
(1 – ½ - 1 – 1 – 1 - 1 – ½)
Descending – B - A – G – F# – E – D – C# – B (1 – 1- ½ - 1 – 1- ½ - 1)
Notice that now this form of the minor scale has introduced two notes that do not exist in D major (G# and A#). However, the key signature of B minor is not altered: it is still F# and C# because this alteration is an
artificial one. G# and A# are considered “accidents” – not part of the scale’s basic structure.
To get the harmonic form sharp the 7th note (A) both ascending and descending:
D minor (harmonic form): B – C# – D – E – F# – G – A# - B (1 – ½ - 1 – 1 – ½ - 1+1/2 – ½).
Again we can see that this form of the minor scale does not share anymore the same notes of D major. A# has been introduced. However, this is an artificial modification and the A# is considered an “accidental” and as such it does not appear in the key signature which continues to be the same as D major: F# and C#.
What if we have a flat scale? The same procedure applies. Consider Bb major:
Bb major scale: Bb – C – D – Eb – F – G – A - Bb (1 – 1- ½ - 1 – 1 – 1 – ½ )
To find the
relative minor go to the 6th note (G) and start the scale from there:
G minor (natural) scale: G – A - Bb – C – D – Eb – F – G (1 – ½ - 1 – 1 – ½ - 1 – 1). Notice that G minor uses exactly the same notes as Bb major: they share the key signature of Bb and Eb.
To get the melodic form sharp the 6th (Eb) and 7th (F) note of this new scale when ascending, but not when descending (when you sharp Eb it becomes E natural):
G minor (melodic form): ascending – G – A - Bb – C – D – E – F# - G
(1 – ½ - 1 – 1 – 1 - 1 – ½)
Descending – G – F – Eb – D – C – Bb – A - G (1 – 1- ½ - 1 – 1- ½ - 1)
Notice that now this form of the minor scale has introduced two notes that do not exist in Bb major (E and F#). However, the key signature of G minor is not altered: it is still Bb and Eb because this alteration is an
artificial one. E and F# are considered “accidents” – not part of the scale’s basic structure.
To get the harmonic form sharp the 7th note (F) both ascending and descending:
G minor (harmonic form): G – A - Bb – C – D – Eb – F# – G (1 – ½ - 1 – 1 – ½ - 1+1/2 – ½).
Again we can see that this form of the minor scale does not share anymore the same notes of Bb major. F# has been introduced. However, this is an artificial modification and the F# is considered an “accidental” and as such it does not appear in the key signature which continues to be the same as Bb major: Bb and Eb.
Also notice that even though both Bb major and G minor are “flat” scales, in their harmonic and melodic forms they will have sharps introduced.
So finding the relative minor scale of a major scale is really finding the minor scale with the same key signature of the major scale. You can either count six notes up from the first note of the major scale, or as… suggested, count three notes down.
This also means that you cannot tell the key of a piece simply by its key signature: the key signature always gives you two choices: a major or its relative minor scale. So no key signature can mean either C major of A minor. A key signature with Bb and Eb can be either Bb major or G minor. You get the idea.
Now I want you to give one last example to clarify once and for all what I believe is the source of all the confusion. Let us consider the Eb major scale:
Eb major scale: Eb – F – G – Ab – Bb – C – D - Eb (1 – 1- ½ - 1 – 1 – 1 – ½ )
To find the
relative minor go to the 6th note (C) and start the scale from there:
C minor (natural) scale: C – D – Eb – F – G – Ab – Bb - C (1 – ½ - 1 – 1 – ½ - 1 – 1). Notice that C minor uses exactly the same notes as Eb major: they share the key signature of Bb, Eb and Ab.
To get the melodic form sharp the 6th (Ab) and 7th (Bb) note of this new scale when ascending, but not when descending (when you sharp Ab and Bb they become A and B natural):
C minor (melodic form): ascending C – D – Eb – F – G – A – B - C
(1 – ½ - 1 – 1 – 1 - 1 – ½)
Descending – C – Bb – Ab – G – F – Eb – D- C (1 – 1- ½ - 1 – 1- ½ - 1)
Notice that now this form of the minor scale has introduced two notes that do not exist in Eb major (A and B). However, the key signature of C minor is not altered: it is still Bb, Eb and Ab because this alteration is an
artificial one. E and A are considered “accidents” – not part of the scale’s basic structure.
To get the harmonic form sharp the 7th note (Bb) both ascending and descending:
C minor (harmonic form): C – D – Eb – F – G – Ab – B - C (1 – ½ - 1 – 1 – ½ - 1+1/2 – ½).
Again we can see that this form of the minor scale does not share anymore the same notes of Eb major. B natural has been introduced. However, this is an artificial modification and the B natural is considered an “accidental” and as such it does not appear in the key signature which continues to be the same as Eb major: Bb. Eb and Ab.
Now comes a major source of confusion. The scales of C major and C minor
are note “related in the sense above. They simply share the starting notes, and names. But they could not be more different.
A relative scale is one that shares the same notes, and consequently the same key signature. C major has no sharps or flats in its key signature. C minor has 3 flats in its key signature. C major’s “relative” minor is A minor; C minor’ relative major is Eb major.
Of course, the first note of a scale is its most important note, so C major and C minor will have a great degree of affinity. I call them “tonic” because they share the tonic (that is, C minor is the “tonic” minor of C major, while A minor is its “relative minor”). But I really don’t care that much for terminology. Jlh Called them “parallels” and this is absolutely fine (C minor is the parallel minor of C major, while A minor is C major’s relative minor).
The important point here is not to confuse scales that share the same name (and therefore the same tonic – first note) but little else, with scales who come from the same parenthood so to speak, scales that share all the same notes and the same key signature. These are the “relative” scales.
Now if you go back to the posts in this thread, you should be able to see that there are no contradictions, just different posters are coming from different directions.
So look at Daevren Summary:
Major: 1 2 3 4 5 6 7
Natural minor: 1 2 b3 4 5 b6 b7
Harmonic minor: 1 2 b3 4 5 b6 7
Melodic minor ascending: 1 2 b3 4 5 6 7
Melodic minor descending: 1 2 b3 4 5 b6 b7
Basically he is comparing scales of the same name, rather than “relative” scales, e.g. C major and C minor. Let us replace the number notes with the actual notes and you will see what I mean:
Major: C – D – E – F – G – A – B
Natural minor: C – D – Eb – F – G – Ab – Bb
[yes, this is the natural version of C minor, that is, the Aeolian mode of Eb major, that is, the scale taken from Eb major (its relative major) by starting at the 6th note. But this does not mean that C minor is the “natural minor” of C major. Can you see the difference?]
Harmonic minor: C – D – Eb – F – G – Ab – B
[yes, indeed this is the harmonic version of C minor – where the 7th note (Bb) has been sharped to B.]
Melodic minor ascending – C – D – Eb – F – G – A – B
Melodic minor descending - C – D – Eb – F – G – Ab – Bb
As a consequence, his formula uses flats, which although handy and neat, do not actually reflect the evolution and the notation you will be using in classical music. Therefore it is better to relate major scales to their “relative” minors, rather than the “same-name” minors, and not to think in terms of flats, but in terms of sharping the 6th and 7th notes (melodic) or only the 7th (harmonic), since
this is the convention used in music scores and that is how you will identify modulations.
So everyone is right.

Best wishes,
Bernhard.