Guitar scale
Bb blues scale (A# blues)
The Bb 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.
- Root
- Bb
- Notes
- BbDbEbFbFAb
- Formula
- m3-W-H-H-m3-W
- Parent scale
- Bb minor pentatonic
- Learning path
- Step 5 of 5
The Bb blues scale is the six notes Bb, Db, Eb, Fb, F and Ab. Read as scale degrees from Bb, 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 Bb, Db, Eb, Fb, F and Ab sits under it without clashing. On the guitar this is not one shape but overlapping positions: the lowest Bb sits at fret 1 on the A string. 1 of the 80 song sheets charted here is in Bbm.
Start here: one Bb blues position
Every note of the scale inside frets 1 to 5 sits in the box highlighted on the full neck above. The diagram below is that box on its own, numbered in the order to play it. Learn this one box first; the rest of the neck is the same shape repeated.
Play the box in this order
Bb 1 → Db ♭3 → Eb 4 → Fb ♭5 → F 5 → Ab ♭7
Plays exactly the run numbered above, one note at a time.
Every Bb on the neck
What notes are in the Bb blues scale?
- Bb1Root
- m3
- Db♭3Minor 3rd
- W
- Eb4Perfect 4th
- H
- Fb♭5Tritone
- H
- F5Perfect 5th
- m3
- Ab♭7Minor 7th
- W
- Bb1octave
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 Bb minor pentatonic scale with one note added, the flat 5th (Fb). Slide into it or bend through it, but do not sit on it: the pull back to F is the whole sound.
Chords that fit the Bb 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.
How to practise the Bb blues scale
- 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.
- Then find the next Bb: low E string, fret 6. Build the same shape from there and play root to root at 60 BPM, one note per beat.
- Then stop counting. Pick a song in Bbm from the list below and improvise on these notes for two minutes. That is what the scale is for.
Songs in Bbm on this site
1 of the 80 song sheets charted here are in Bbm. Play this scale over any of them and every note lands inside the key.
Bb blues scale: common questions
What notes are in the Bb blues scale?
What is the formula for the Bb blues scale?
What chords work with the Bb blues scale?
How is the Bb blues scale related to the Bb pentatonic scales?
What is the easiest fingering for the Bb blues scale?
How do I practise the Bb blues scale?
More Bb scales
This scale in other keys
