A# Locrian
A minor diatonic mode with a minor 2nd and diminished 5th above the tonic; its tonic triad is unstable.
Octaves
Musical context
How the mode relates to the scale, chord, key and progression.
Theory
General info
- Name
- A# Locrian
- Family
- Diatonic modes
- Note count
- 7
- Step formula
- H – W – W – H – W – W – W
Notes & degrees
1A#root
b2Bminor 2nd
b3C#minor 3rd
4D#perfect 4th
b5Edim 5th
b6F#minor 6th
b7G#minor 7th
Characteristic degrees
IIBlowered 2nd degree
VElowered 5th degree
Construction
- Overview
- A minor diatonic mode with a minor 2nd and diminished 5th above the tonic; its tonic triad is unstable.
- Application in music
- Pairs with m7b5 chords. Its diminished tonic triad makes the tonal centre difficult to establish.
- Interval formula
- A#HBWC#WD#HEWF#WG#
- Reference mode
- A# Aeolian
A# Aeolian
IA#
IIB#
IIIC#
IVD#
VE#
VIF#
VIIG#
A# Locrian
IA#
IIB
IIIC#
IVD#
VE
VIF#
VIIG#
How the mode is built
- Position in the system
- Degree 7 of the parent major scale
- Parent scale
- B majorLocrian mode — degree 7 of the scale
- Parallel major
- A# majormajor from the same tonic
Sibling modes
Chords by degree
Tensions & resolutions
Stable degrees
IA#nominal centretonic
IIIC#defines modal qualitythird
Typical resolutions & tensions
IIIC#C#
IVD#D#
In a dominant context, scale degree 4 normally descends by step to 3.
IA#A#
IIBB
Scale degree 2 may descend to tonic; the motion is especially close when degree 2 is lowered.
This mode on guitar 🎸
See how A# Locrian looks on guitar.
Circle of fifths
The major key on the same tonic and its neighbouring keys on the circle of fifths.
Connections
Practice
Keyboard Trainer
Reinforce it in practice — play and name notes on the interactive keyboard.