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Guitar scale

Ab blues scale (G# blues)

The Ab blues scale is the minor pentatonic plus the blue note (♭5), one extra semitone carrying all the tension and release of the blues. Best for blues, rock and country lead lines.

By Chiye · Updated · Counts from the 104 song sheets on openguitarchords.com

Root
Ab
Notes
AbCbDbDEbGb
Formula
m3-W-H-H-m3-W
Parent scale
Ab minor pentatonic
Learning path
Step 5 of 5
123456789101112131415EADGBeGbAbCbDbDEbGbCbDbDEbGbAbCbDEbGbAbCbDbDEbAbCbDbDEbGbAbCbDbDEbGbAbCbDbDGbAbCbDbDEbGb
All 15 frets, high e string on top. Orange marks an Ab root, the box is the one position to start with, and fret 0 is an open string.
Print or save the Ab blues chart
Ab blues scale chart: every note from fret 0 to 15 across all six strings, root notes marked in orange

940 × 230 px version of the chart above, sized for a phone screen or a printed handout. Tap the image to save it.

The Ab blues scale is the six notes Ab, Cb, Db, D, Eb and Gb. Read as scale degrees from Ab, that is 1, ♭3, 4, ♭5, 5, ♭7. Every note is a fixed distance from the one before it: m3-W-H-H-m3-W, where W is a whole step (2 frets) and H is a half step (1 fret), and m3 is three frets. That pattern is the whole scale. Move it so the root lands on a different note and you are playing that key's blues scale. Having only six notes, it fits a narrow set of chords: any triad built entirely from Ab, Cb, Db, D, Eb and Gb sits under it without clashing. On the guitar this is not one shape but overlapping positions: the lowest Ab sits at fret 1 on the G string. 5 of the 104 song sheets charted here are in B.

Start here: one Ab blues position

The notes inside frets 1 to 5 sit in the highlighted box above. The diagram below isolates that position and numbers the run to play. Learn this box first; other positions contain the same scale notes with different fingerings.

Play the box in this order

12345EADGBeGbAbCbDbDEbGbAb123456
Numbers 1 to 6 are the playing order, one note at a time. Letters are the other Ab blues notes in this position; orange letters are roots.

Ab 1 → Cb ♭3 → Db 4 → D ♭5 → Eb 5 → Gb ♭7

Plays exactly the run numbered above, one note at a time.

Every Ab on the neck

low Efret 4
Afret 11
Dfret 6
Gfret 1
Bfret 9
high Efret 4

What notes are in the Ab blues scale?

  1. Ab1Root
  2. m3
  3. Cb♭3Minor 3rd
  4. W
  5. Db4Perfect 4th
  6. H
  7. D♭5Tritone
  8. H
  9. Eb5Perfect 5th
  10. m3
  11. Gb♭7Minor 7th
  12. W
  13. Ab1octave

W whole step (2 frets), H half step (1 fret), m3 minor 3rd (3 frets). The same pattern from any other root gives that key's blues scale.

This scale is the Ab minor pentatonic scale with one note added, the flat 5th (D). Slide into it or bend through it, but do not sit on it: the pull back to Eb is the whole sound.

Chords that fit the Ab blues scale

A chord fits this scale when all of its notes are already in the scale, which is a test you can run yourself rather than a style guide. Ordered by real use in the library.

Bm84 uses hereB9 uses hereBm/G#5 uses hereC#sus4no uses yetC#sus2no uses yetF#sus4no uses yet

How to practise the Ab blues scale

  1. Frets 1 to 5, slowly. The position above, up and back, naming every note out loud. Naming is what turns a shape into a scale.
  2. Then find the next Ab: D string, fret 6. Use the full neck diagram to find the scale notes around that root. Play root to root at 60 BPM, one note per beat; fingerings change when you move to a different string set.
  3. Then stop counting. Pick a song in B from the list below and improvise on these notes for two minutes. That is what the scale is for.

Songs in B on this site

5 of the 104 song sheets charted here are in B. Play this scale over any of them and every note lands inside the key.

BPayphoneMaroon 5 feat. Wiz KhalifaBSailor SongGigi PerezBYellowColdplayBFell in Love with a GirlThe White StripesBI'm YoursJason MrazAllEvery song sheet

Ab blues scale: common questions

What notes are in the Ab blues scale?
The Ab blues scale is Ab, Cb, Db, D, Eb and Gb. Counting from the root Ab, the degrees are 1, ♭3, 4, ♭5, 5, ♭7.
What is the formula for the Ab blues scale?
The step pattern is m3-W-H-H-m3-W. Read left to right from Ab: minor 3rd (3 frets), then whole step (2 frets), then half step (1 fret), then half step (1 fret), then minor 3rd (3 frets), then whole step (2 frets). Apply the same pattern from any other note and you get that note's blues scale.
What chords work with the Ab blues scale?
The chords built only from Ab, Cb, Db, D, Eb and Gb are Bm, B, Bm/G# and C#sus4; Bm appears 84 times in the library. Shared scale notes can still create tension over a chord, so use its chord tones for stable phrase endings.
How is the Ab blues scale related to the Ab pentatonic scales?
The Ab blues scale is the Ab minor pentatonic with the flat 5th (D) added. The pentatonics work the other way: Ab major pentatonic takes Db and G out of Ab major, leaving five notes that are hard to play wrong.
What is the easiest fingering for the Ab blues scale?
The position above starts on the low E string at fret 4 and stays inside frets 1 to 5: Ab at fret 4 on the low E, then Cb at fret 2 on the A, then Db at fret 4 on the A, then D at fret 5 on the A, then Eb at fret 1 on the D, then Gb at fret 4 on the D. Everything else on the neck is the same notes repeated in other positions.
How do I practise the Ab blues scale?
Play frets 1 to 5 up and back, naming each note. Then locate Ab at fret 6 on the D string. Use the neck diagram to learn that position, rather than copying the same grip across strings. Practise at 60 BPM.

More Ab scales

Ab majorAb natural minorAb major pentatonicAb minor pentatonic

This scale in other keys

C bluesC# bluesD bluesEb bluesE bluesF bluesF# bluesG bluesAll 60 scale charts
Previous keyAb minor pentatonicNext keyA major