A Locrian Mode

The A Locrian Mode has a diminished quality due to its Minor Third C and Diminished Fifth E. The Locrian Mode, like A Locrian, is one of seven diatonic modes originally formed using just the natural notes (think just the white keys on a piano) but starting on a particular note, B in the case of the Locrian Mode, which creates a unique sequence of intervals. This mode can then be transposed to any key such as A Locrian Mode in this example. A Locrian Mode is classified as a heptatonic scale as it has seven notes, A, B, C, D, E, F, G. The A Locrian Mode is also known as a diatonic scale which conforms to specific rules.

Below you will find the A Locrian Mode notes, notation, patterns, degrees, intervals and more. You can also opt to see the A Locrian Mode on your preferred instrument.

Notes Ascending

A, B, C, D, E, F, G, A

Notes Descending

A, G, F, E, D, C, B, A

Notation Ascending

Notation Descending

Pattern Ascending

S, T, T, S, T, T, T

S = Semitone, T = Tone (2 Semitones)

Pattern Descending

T, T, T, S, T, T, S

S = Semitone, T = Tone (2 Semitones)

Degrees Ascending

NoteNumberName
A1Tonic
B2Supertonic
C3Mediant
D4Subdominant
E5Dominant
F6Submediant
G7Subtonic
A8Tonic (Octave)

Degrees Descending

NoteNumberName
A8Tonic (Octave)
G7Subtonic
F6Submediant
E5Dominant
D4Subdominant
C3Mediant
B2Supertonic
A1Tonic

Intervals Ascending

NotesSemitonesInterval
A > A0Perfect Unison (P1)
A > B1minor 2nd (m2)
A > C3minor 3rd (m3)
A > D5Perfect 4th (P4)
A > E6Diminished 5th (d5 or Tritone)
A > F8minor 6th (m6)
A > G10minor 7th (m7)
A > A12Perfect Octave (P8)

Intervals Descending

NotesSemitonesInterval
A > A0Perfect Unison (P1)
A > G2Major 2nd (M2)
A > F4Major 3rd (M3)
A > E6Augmented 4th (A4 or Tritone)
A > D7Perfect 5th (P5)
A > C9Major 6th (M6)
A > B11Major 7th (M7)
A > A12Perfect Octave (P8)

Chords related to A Locrian Mode

Related Triads

These chords have been built using the notes of the A Locrian Mode. The chords are in degree order and shown in Roman numerals (lowercase = minor/diminished, uppercase = Major/Augmented).

io Chord - A Diminished

II Chord - B Major

iii Chord - C Minor

iv Chord - D Minor

V Chord - E Major

VI Chord - F Major

vii Chord - G Minor

Learn to Play A Locrian Mode

Instrument View

See A Locrian Mode on

If you want to learn what scales and modes are and much more, check out our free Fundamentals of Music Theory course. If you already know some of the basics, you can jump straight into the scales lesson.

Learn more about Music Theory

More to learn