Construction
Step pattern (W = whole step, H = half step): W-H-W-W-W-W-H.
Formula (intervals from the root): 1-2-b3-4-5-6-7.
Melodic minor is a major scale with a single alteration: the 3rd is lowered to b3. Every other degree stays major. That one-note shift from major to melodic minor means the difference between bright and bittersweet -- lower b3 back to 3 and you are playing major again. The natural 6 and leading tone (7) together eliminate the augmented second (3 half steps) that makes harmonic minor hard to sing, while preserving dominant function.
Origin and Relationships
Melodic minor generates seven modes -- scales derived by starting from each degree and treating that note as the new root -- each with a distinct harmonic role:
- 1st: Melodic Minor -- minor with major 6 and 7, the "jazz minor" sound
- 2nd: Dorian b2 -- Dorian with b2, Phrygian-like darkness plus Dorian's natural 6
- 3rd: Lydian Augmented -- Lydian with #5, bright and expansive
- 4th: Lydian Dominant -- Lydian with b7, dominant function with floating #4
- 5th: Mixolydian b6 -- dominant with b6, also called "Aeolian Dominant"
- 6th: Locrian nat2 -- half-diminished scale, Locrian with natural 2
- 7th: Altered (Super Locrian) -- every extension altered, maximum dominant tension
Harmonic Context
In Roman numeral analysis (uppercase = major, lowercase = minor):
iM7(minor-major seventh -- minor triad with major 7th): The tonic chord. The major 7 against b3 creates a dark-yet-bright quality -- tense and cinematic.ii7(minor seventh): Built on the 2nd degree. The chord itself does not contain the 6th as a chord tone, but the underlying mode (Dorian b2) retains the natural 6.bIIImaj7#5(augmented major seventh): Lydian Augmented territory. Expansive and unstable.IV7(dominant seventh): Lydian Dominant application. A non-resolving dominant with the #4 adding brightness.V7(dominant seventh): Mixolydian b6 -- dominant function with the b6 adding darkness absent from standard Mixolydian.viø7(half-diminished -- minor 7th with a b5): Locrian nat2 chord. The primary scale choice over half-diminished sounds in jazz.
Characteristic Tones
The intervals that give melodic minor its distinctive sound:
- b3 (minor third): The single alteration from major. It defines the minor quality while the remaining major intervals keep the scale bright. Compare to natural minor: melodic minor shares only this degree with the natural minor sound -- everything else leans major.
- 6 (natural sixth): Shared with Dorian. The natural 6 prevents the augmented second (3 half steps) that appears in harmonic minor between b6 and 7, making melodic minor smoother to play and hear.
- 7 (leading tone): Creates the same resolution pull as harmonic minor. Compare to natural minor: natural minor has b7, which removes dominant function. Melodic minor keeps it.
Melodic Applications
Melodic minor smooths over harmonic minor's augmented second (the gap between b6 and 7) while preserving the leading tone. In jazz, use the ascending form in both directions. Each mode pairs with a specific chord type -- the Altered scale (7th mode) serves dominant chords seeking maximum tension, while Lydian Dominant (4th mode) fits dominant chords that float rather than resolve. The iM7 chord is the tonic sound of this world.
Practice Seeds
Compare to harmonic minor. Play both scales from the same root, listening for the b6 vs. natural 6 difference. Hear why melodic minor feels smoother -- no augmented second to navigate.
Min(maj7) sound. Arpeggiate 1-b3-5-7 within the scale. Internalize this tense, cinematic chord -- it defines the melodic minor tonic and distinguishes it from ordinary minor.
Altered scale discovery. Play the scale starting from its 7th degree while a dominant seventh chord drones underneath. Hear every extension altered (b9, #9, #11, b13) -- this is maximum dominant tension built from the same seven notes.
Lydian Dominant from the 4th. Play melodic minor starting from its 4th degree over a dominant seventh chord. Listen for how the #4 (now the #11 of the chord) lifts the sound from driving to floating -- one mode, one chord, one color to internalize per session.