Natural Minor Scale

Scale Major Scale Harmonic Minor Scale Melodic Minor Scale Aeolian Mode Key Signature

The shortest way to understand the natural minor scale: lower the 3rd, 6th and 7th degrees of a major scale by one semitone each. Nothing else moves, and the pattern becomes:

whole — half — whole — whole — half — whole — whole

Degree	Versus major	C major → C natural minor
1	unchanged	C
2	unchanged	D
3	lowered	E → E♭
4	unchanged	F
5	unchanged	G
6	lowered	A → A♭
7	lowered	B → B♭

Together the three lowered degrees change three things: the tonic triad becomes minor (darker), the 7th is no longer a leading tone pulling to the tonic (the pull home weakens), and the key signature gains three flats or loses three sharps.

Why minor comes in three forms

The natural minor has one inconvenience: its 7th degree sits a whole tone below the tonic, not a semitone, so it lacks the force that drives a melody home. Hence two adjusted versions:

Name	Change	Cost
[[concept:harmonic-minor	harmonic minor]]	raise the 7th
[[concept:melodic-minor	melodic minor]]	raise 6 and 7 going up, restore going down

These are not three separate scales but one scale adjusted three ways for three needs.

The alias: natural minor = the Aeolian mode

Its interval pattern is identical to the Aeolian mode. Only the context of the name differs: in tonal language it is "A minor", in modal language "A Aeolian". The same doubling appears between Dorian and major/Mixolydian.

Diagram: lowering three degrees

Listen: one tonic, two colours

Hear major first, then natural minor. Same tonic, same starting C, only three notes differ, and the whole light flips. That is the entire job of those three semitones.

Common misconceptions

"Minor means sad." Natural minor supplies a darker colour and a weaker pull home; mood still comes from rhythm and harmony.
"There is only one minor scale." Natural, harmonic and melodic are the common forms; pentatonic minor and jazz minor also exist.
"A minor key needs flats added at the end." The key signature follows the tonic only (A minor shares C major's empty signature). The lowered notes are already inside it.
"Natural minor and Aeolian are different things." Identical structure, two names in two contexts.

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Listen in the library

Scales, Arpeggios, and CadencesC13:22Scale and arpeggio exercises walk the natural minor at its slowest — the three lowered degrees are plain to hearDetailsAeolian WaltzC14:49The Aeolian Waltz — natural minor and the Aeolian mode share one structure, so one piece carries both namesDetails27. Greensleeves to a Ground with DivisionC10:24Greensleeves moves in small intervals and steps; its dark colour is the common use of the minor scaleDetails

All tracks from midicn-lib — inline badge is the license tier (C1 commercial / C2 non-commercial / C3 study only).

Sources

自然小调的音程结构（全半全全半全全）与"大调第 3/6/7 级降低"的对应关系，属乐理通则
自然小调与爱奥利亚调式同构，为通行表述

Used for fact-checking only; all prose is original.

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