Locrian and Aeloian scales and Minor ii dim7 – V7 – i Progressions
Aeloian scale –– also known as pure minor or natural inor scale — cosists of the ascending pattern:
— WHWWHWW
Aeloian scale: A B C D E F G A (in C scale)
The aeloian scale — 6th mode in the major scale family and contains the same notes as the major scale down a mjaor 6th (or up a minor 3rd).
Aeloian scale — may be thought of as a dorian scale with the 6th notes lowered a half step.
Like the doiran scale — this scale may be used to improvse over minor triads, minor7th chords, minor 9th chords or minor 11th chords.
Since aeloian mode contains a minor 6th degree , it is not tpically used to color a minor 6th chord (which contains a major 6th)
Aeolian scale suonds best when
— used over a minor chord functioning as a tonic chord ( “i” in a mnior key)
–or as a submediant chord (vi in a major key).
Dorian mode is usually the preferrd choice when the minoir chord is functioning as a supertonic chord ( “ii” in a major key) or when used in modal compositions.
The aeolian mode may also be used in a modal context.
Every note in the aeolian scale works well over the minor 7th chord with the exception of the b6th which has a tendency to resolve down a half step tot he 5th.
The 2nd and 4th scale degress possess the riches color in relationship to the minor chord.
Locrian scale — consists of the ascending pattern:
HWWHWWW
Locrian scale is the 7th mode in the major scale family and contains the same notes as the major scale a minor 2nd above.
B C D E F G A B (in C scale)
The locrian scale is the lest stable mode in the major scale modal family cuz of the interval of a dim 5th between the 1st and 5th notes in the scale.
The locrian scale is used when improvising over the half-dim chor, which may be thougth of as a minor 7th chod with a flatted 5th.
— Bm7b5 or B-7b5 or B dim7
For 11th:
Bm11(b5) or B-11(b5) or B dim 11 (b5)
The half-dim 7th chord consists of a root, minor 3rd a dim 5th and a m7th.
The lowered 2nd of the locrian scale or (b9th) is not typically considered to be a usable chord extension but the 11th is frequently added.
Occasionally a major 9th is added to the half dim chord but this note is derived form a mode of the melodic minor family called the locrian #2 scale.
Half diminished chord is usually used as a supertonic (ii dim7) chord in a minor ii-V-i progression,
although it may also occur as a leading-tone (viidim7) chord in a major key or a secondary leading tone chord.
In a minor iidim7 – V – i progression, the V chord is altered by adding a #9th or a b9th, and often a #5th or a b5th as well.
The preferred scale choice for improvising over an altered V7 chord is a mode of th melodic minor family called the altered scale.
Bdim7 – E7(+9,+5) – Am
Keyboard skills: play minor iidim7 — V7b9 — i
D dim7 — G7b9 — Cm
C dimu — F7b9 — Bbm
Bbdim7 — Eb7b9 — Abm
G#dim7 — C#7b9 — F#m
F#dim7 — B7b9 — Em
Edim7 — A7b9 — Dm
Ebdim7 — Ab7b9 — Dbm
C#dim7 — F#7b9 — Bm
Bdim7 — E7b9 — Am
Adimu — D7b9 — Gm
Gdim7 — C7b9 — Fm
Fdim7 — Bb7b9 — Ebm