My Guitar Notes

Ab major pentatonic scale

Five notes taken from the major scale: the tonic, second, third, fifth and sixth. It contains no semitones, so no note of the scale lies a half step from another.

Root
Ab (also written G#)
Scale
Major pentatonic
Type
pentatonic
Notes
Ab Bb C Eb F
Notes in the scale
5
Degree formula
1 2 3 5 6
Semitones from the root
0 2 4 7 9
Step pattern
W W W+H W W+H
Key signature of this root
Ab major / F minor · Bb Eb Ab Db
Written use
Named 1 2 3 5 6. Commonly played as a two-notes-per-string shape or as the five CAGED positions with the fourth and seventh degrees removed.

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
1Ab0Perfect unisontonic
2Bb2Major second
3C4Major third
5Eb7Perfect fifth
6F9Major sixth

Positions on the guitar

The five windows below are computed, not copied from a shape chart. The script locates the lowest occurrence of Ab 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 3rd string G3 at fret 1. 9 notes of the scale inside this window.

String0123
1st (highest) string E4F
2nd string B3C
3rd string G3AbBb
4th string D3EbF
5th string A2BbC
6th string E2F

Position 2

Root on the 6th string E2 at fret 4. 12 notes of the scale inside this window.

String23456
1st (highest) string E4AbBb
2nd string B3EbF
3rd string G3BbC
4th string D3FAb
5th string A2CEb
6th string E2AbBb

Position 3

Root on the 4th string D3 at fret 6. 14 notes of the scale inside this window.

String45678
1st (highest) string E4AbBbC
2nd string B3EbF
3rd string G3CEb
4th string D3AbBb
5th string A2EbF
6th string E2AbBbC

Position 4

Root on the 2nd string B3 at fret 9. 12 notes of the scale inside this window.

String7891011
1st (highest) string E4CEb
2nd string B3AbBb
3rd string G3EbF
4th string D3BbC
5th string A2FAb
6th string E2CEb

Position 5

Root on the 5th string A2 at fret 11. 13 notes of the scale inside this window.

String910111213
1st (highest) string E4EbF
2nd string B3AbBbC
3rd string G3FAb
4th string D3CEb
5th string A2AbBb
6th string E2EbF

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