F
Ab
Eb
B
Gb
D
A
B
C
Eb
F
C
Ab
B
Gb
D
A
F
C
D
Eb
Gb
Ab
Eb
B
D
A
F
C
Ab
Eb
F
Gb
A
B
Gb
D
F
C
Ab
Eb
B
Gb
Ab
A
C
D
A
F
Ab
Eb
B
Gb
D
A
B
C
Eb
F
C
Ab
B
Gb
D
A
F
C
D
Eb
Gb
Ab
Eb
B
D
A
F
C
Ab
Eb
F
Gb
A
B
Gb
D
F
C
Ab
Eb
B
Gb
Ab
A
C
D
A
F
Ab
Eb
B
Gb
D
A
B
C
Eb
F
C
Ab
B
Gb
F Half-Whole Diminished Scale notes: F Gb Ab A B C D Eb. Formula: 1 b2 b3 3 #4 5 6 b7. Chords that fit it: F, Fm, F7, Fm7, Fdim, Fdim7, Fm7b5, F5.
The half-whole diminished scale alternates half and whole steps: 1 b2 b3 3 #4 5 6 b7. It fits dominant chords with b9 and #9, so it is a jazz and fusion staple over 7b9 chords. It is symmetric: the pattern repeats every three frets, so there are only three different ones.