My Guitar Notes

F locrian scale

The seventh mode of the major scale: a minor scale with a flattened second and a flattened fifth. It is the only mode whose tonic triad is diminished, which is why it is rarely used as a key centre.

Root
F
Scale
Locrian
Type
mode, mode 7 of seven
Notes
F Gb Ab Bb Cb Db Eb
Notes in the scale
7
Degree formula
1 b2 b3 4 b5 b6 b7
Semitones from the root
0 1 3 5 6 8 10
Step pattern
H W W H W W W
Parent major scale
F# major
Key signature of this root
F major / D minor · Bb
Written use
Named 1 b2 b3 4 b5 b6 b7. Its tonic triad is diminished; it is the natural scale over a half-diminished chord.

Notes and degrees

Each degree of the scale, its note name in this key, and its distance from the root in semitones.

DegreeNoteSemitonesInterval from the root
1F0Perfect unisontonic
b2Gb1Minor second
b3Ab3Minor third
4Bb5Perfect fourth
b5Cb6Tritone
b6Db8Minor sixth
b7Eb10Minor seventh

Positions on the guitar

The five windows below are computed, not copied from a shape chart. The script locates the lowest occurrence of F on each of the five upper strings within the first twelve frets and takes a five-fret window centred on it. Because a scale repeats every twelve frets, these five windows cover the whole neck; the same sequence returns an octave higher. The positions are numbered from the lowest fret upwards, so position 1 is always the window nearest the nut and position 5 the window nearest the twelfth fret.

Position 1

Root on the 6th string E2 at fret 1. 12 notes of the scale inside this window.

String0123
1st (highest) string E4FGb
2nd string B3BDb
3rd string G3AbBb
4th string D3EbF
5th string A2BbB
6th string E2FGb

Position 2

Root on the 4th string D3 at fret 3. 17 notes of the scale inside this window.

String12345
1st (highest) string E4FGbAb
2nd string B3DbEb
3rd string G3AbBbB
4th string D3EbFGb
5th string A2BbBDb
6th string E2FGbAb

Position 3

Root on the 2nd string B3 at fret 6. 18 notes of the scale inside this window.

String45678
1st (highest) string E4AbBbB
2nd string B3EbFGb
3rd string G3BDbEb
4th string D3GbAbBb
5th string A2DbEbF
6th string E2AbBbB

Position 4

Root on the 5th string A2 at fret 8. 18 notes of the scale inside this window.

String678910
1st (highest) string E4BbBDb
2nd string B3FGbAb
3rd string G3DbEbF
4th string D3AbBbB
5th string A2EbFGb
6th string E2BbBDb

Position 5

Root on the 3rd string G3 at fret 10. 16 notes of the scale inside this window.

String89101112
1st (highest) string E4DbEb
2nd string B3AbBbB
3rd string G3EbFGb
4th string D3BbBDb
5th string A2FGbAb
6th string E2DbEb

Read the grid as a chord diagram: the top row is the first string. Degrees appear in the notes and degrees table above; a filled cell is a note of the scale, and the shaded cell is the tonic.

Related keys and modes

Related