Ab Locrian

A flat Locrian scale for guitar.
The Ab Locrian is a seven-note scale, it is also called a mode. Colored circles in the diagram mark the notes in the scale (darker color highlighting the root notes). In the fretboard pattern, the first root note is on the 6th string, 4th fret.

Ab

2 octaves

Ab Locrian scale diagramNotes: Ab - Bbb - Cb - Db - Ebb - Fb - GbIntervals: 1 - 2 - 2 - 1 - 2 - 2 - 2 Type: Septonic 

The scale displayed with its numeric formula, intervals and scale degrees.

Formula Notes Intervals Degrees
1 Ab Unison Tonic
b2 Bbb Minor second Supertonic
b3 Cb Minor third Mediant
4 Db Perfect fourth Subdominant
b5 Ebb Diminished fifth Dominant
b6 Fb Minor sixth Submediant
b7 Gb Minor seventh Subtonic

The second degree is written as Bbb, which is the same as A. The third degree is written as Cb, which is the same as B. The fifth degree is written as Ebb, which is the same as D. The sixth degree is written as Fb, which is the same as E. A practice in a scale notation is to not include the same letter twice, if it can be avoided.

The A flat Locrian scale consists of seven notes. These can be described as steps on the guitar fingerboard according to the following formula: half, whole, whole, half, whole, whole, whole from the first note to the same in the next octave.
The Ab Locrian is a mode of the A Major Scale. It contains exactly the same notes, but starts on another note.

This scale is primarily used in jazz and is rare in popular music.
The easiest way to learn this scale is to think of it as the A Major starting on its seventh note.

Chords that are related to this scale are the following:

Abdim, Abm7b5
A, Amaj7, A6, A6/9, Amaj9, Amaj13
Bm, Bm7, Bm6, Bm9, Bm11, Bm13
Dbm, Dbm7
D, Dmaj7, D6, D6/9, Dmaj9, Dmaj13
E, E7, E6, E6/9, E9, E11, E13
Gbm, Gbm7, Gbm9, Gbm11

The tones in these chords correspond to the tones of the Ab Locrian scale.

Related to Locrian are Locrian ♮2 and Locrian #6, being the 4th mode of the Melodic Minor and the 2nd mode of the Harmonic Minor.

The Ab Locrian ♮2 scale, also called Ab Half-diminished scale, is identical to the Ab Locrian except for a major second instead of a minor second which is indicated by the natural symbol. It can be displayed as follows:

Formula Notes Intervals Degrees
1 Ab Unison Tonic
2 Bb Major second Supertonic
b3 Cb Minor third Mediant
4 Db Perfect fourth Subdominant
b5 Ebb Diminished fifth Dominant
b6 Fb Minor sixth Submediant
b7 Gb Minor seventh Subtonic

The Ab Locrian ♮2 contains the same notes as the B Melodic Minor Scale, but starts on another note.

The Ab Locrian #6 scale is identical to the Ab Locrian except for a major sixth instead of a minor sixth which is indicated by the sharp symbol in the name. It can be displayed as follows:

Formula Notes Intervals Degrees
1 Ab Unison Tonic
b2 Bbb Minor second Supertonic
b3 Cb Minor third Mediant
4 Db Perfect fourth Subdominant
b5 Ebb Diminished fifth Dominant
6 F Major sixth Submediant
b7 Gb Minor seventh Subtonic

The Ab Locrian #6 contains the same notes as the Gb Harmonic Minor Scale, but starts on another note.