Harmonic & Melodic Minor
Major keys get one scale; minor keys get three. The reason is a single problem — the natural minor scale has no leading tone, so it can't make a strong cadence home. Harmonic and melodic minor are the two classic fixes. Here they are side by side, so you can hear exactly what changes and why.
The Core Idea: the missing leading tone
In a major key the 7th note is a semitone below the tonic — a leading tonethat pulls up to home. Natural minor's 7th is a whole tone below (♭7), so its V chord is minor and the pull is weak. Harmonic minor raises the 7th to restore that pull. Melodic minor also raises the 6th to smooth out the big gap harmonic minor creates between ♭6 and 7.
Minor key root
The Three Minor Scales
Changed degrees vs. natural minor are highlighted in red. Play each to hear the difference.
Natural Minor (Aeolian)
The plain minor scale. Its ♭7 gives a soft, modal cadence (v–i) — atmospheric, but no strong pull home.
Harmonic Minor
Raise the 7th and you get a leading tone — now the V chord is a real dominant 7th that pulls hard to i. The ♭6→7 gap (an augmented 2nd) gives its exotic, Spanish/Middle-Eastern colour.
Melodic Minor (ascending)
Raise the 6th too and the awkward augmented-2nd leap is smoothed out — a graceful ascending minor line that keeps the strong leading tone. (Classically it reverts to natural minor descending.)
Hear why harmonic minor exists
In A minor the V chord is built on E. From natural minor it's a minor chord (Em); harmonic minor's raised 7th makes it a dominant E7. Play both cadences back to back — the second one really lands.
A minor v chord — soft, modal, no leading tone. It drifts home rather than resolving.
The raised 7th turns the v into a dominant V7 — a leading tone that pulls hard into the tonic.
What each scale unlocks
Rock, pop and folk in minor keys. Modal, atmospheric progressions (i–♭VII–♭VI). Same notes as its relative major.
Strong minor cadences (V7–i), the vii°7 diminished chord, and that exotic augmented-2nd colour (flamenco, metal, classical).
Smooth jazz-minor lines and a whole family of modes — including the altered scale played over 7alt chords.
Formula Reference
| Scale | Degrees | vs. natural minor |
|---|---|---|
| Natural Minor (Aeolian) | 1 2 ♭3 4 5 ♭6 ♭7 | — (the reference) |
| Harmonic Minor | 1 2 ♭3 4 5 ♭6 7 | raised 7 (♭7 → 7) |
| Melodic Minor (ascending) | 1 2 ♭3 4 5 6 7 | raised 6 and 7 |
See these scales on the fretboard
Explore harmonic and melodic minor fingerings and positions in the Scale Visualizer.