Tips for Learning the A# / Bb Major Pentatonic Scale on Guitar
Think Bb, not A#
Read this scale as Bb major pentatonic (Bb C D F G). The guitar fingerings are identical, but Bb is the spelling used in horn charts, blues, and jazz.
It is Bb major minus the 4th and 7th
Take Bb major (Bb C D Eb F G A) and remove Eb (4th) and A (7th). The pentatonic that remains — Bb C D F G — has no half-steps.
Same notes as G minor pentatonic
Bb major pentatonic shares all five notes with G minor pentatonic, a very common rock and blues box. Learn one and you have both.
Root on fret 1 of the A string
Bb / A# sits on fret 1 of the A string and fret 6 of the low E string. Anchor your box positions on those roots — there are no open-string roots.
Target Bb, D, and F
Those notes spell a Bb major chord. Resolving onto them sounds complete; C and G are the colour tones between.
About the A# / Bb Major Pentatonic Scale
A# / Bb major pentatonic is the five-note core of the Bb major scale — Bb, C, D, F, G (1, 2, 3, 5, 6). Removing the 4th (Eb) and 7th (A) eliminates the half-steps and leaves a warm, consonant scale. Guitarists read it as Bb — a favourite key for brass, blues, and jazz — and its notes are identical to G minor pentatonic, the relative minor.
- 01Notes (Bb): Bb – C – D – F – G
- 02Scale degrees: 1 – 2 – 3 – 5 – 6 of Bb major
- 03Built by removing the 4th (Eb) and 7th (A) from Bb major
- 04Enharmonic with A# major pentatonic — identical fingerings
- 05Relative minor pentatonic: G minor pentatonic (same five notes)
- 06Root on fret 1 of the A string
- 07Contains no half-steps — every note is consonant
A# / Bb Major Pentatonic — note by note
Every major pentatonic uses the same five-note formula — scale degrees 1, 2, 3, 5, and 6 of the major scale, with the 4th and 7th removed. That is what eliminates the half-steps and leaves only consonant tones.
| Degree | Note | Role | Interval |
|---|---|---|---|
| 1 | A# / Bb | Root (tonic) | Unison (0 st) |
| 2 | C | Major second | +2 semitones |
| 3 | D | Major third | +4 semitones |
| 5 | F | Perfect fifth | +7 semitones |
| 6 | G | Major sixth | +9 semitones |