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B♭ major pentatonic scale on bass guitar
B♭ major pentatonic contains B♭, C, D, F, and G. Box 1 places the root on string 3, fret 1 and string 1, fret 3.
How it is built
Formula 1, 2, 3, 5, 6
How do you play the B♭ major pentatonic scale on bass?
B♭ major pentatonic in box 2 runs from fret 3 to fret 6, 8 notes across 4 strings, from G on the E string at fret 3 up to C on the G string at fret 5. The root falls on the E string at fret 6 and the G string at fret 3.
Every note in this box, string by string
| String | Frets | Notes |
|---|---|---|
| 4 (E) | 3, 6 | G, B♭ |
| 3 (A) | 3, 5 | C, D |
| 2 (D) | 3, 5 | F, G |
| 1 (G) | 3, 5 | B♭, C |
Box 5 · frets 10–13
B♭ major pentatonic in box 5 runs from fret 10 to fret 13, 8 notes across 4 strings, from D on the E string at fret 10 up to G on the G string at fret 12. The root falls on the A string at fret 13.
Every note in this box, string by string
| String | Frets | Notes |
|---|---|---|
| 4 (E) | 10, 13 | D, F |
| 3 (A) | 10, 13 | G, B♭ |
| 2 (D) | 10, 12 | C, D |
| 1 (G) | 10, 12 | F, G |
Why it sounds like that
B♭ major pentatonic drops the fourth and seventh degrees from B♭ major, leaving 1, 2, 3, 5, and 6. The intervals are 0, 2, 4, 7, and 9 semitones, producing steps of W, W, 1½, W, 1½. This five-note structure avoids half-step dissonance.
When to use it
B♭ major pentatonic fits B♭ major and B♭ 5th chords. It works over B♭ major progressions and is common in brass-band and rock bass lines.
Which position to practise
Practise Box 1 first. It keeps the root under your first finger on string 3, fret 1 and covers frets 3–6.
Common questions
What notes are in B♭ major pentatonic?
B♭ major pentatonic contains B♭, C, D, F, and G. These are the 1st, 2nd, 3rd, 5th, and 6th degrees of B♭ major. The scale omits the 4th and 7th degrees. It is also spelled A♯ in enharmonic notation for the same sounding root.
Which chords does B♭ major pentatonic fit?
B♭ major pentatonic fits B♭ major and B♭ 5th chords. It also works over B♭ major progressions. Use it for bass lines in major keys.
How do I practise B♭ major pentatonic?
Start with Box 1 and play the notes ascending and descending. Use a metronome at 60 bpm and gradually increase speed. Connect to Box 2 by shifting to the next root position.