Explore scales · Bass
B♭ major scale on bass guitar
B♭ major contains B♭, C, D, E♭, F, G, and A. Box 1 spans frets 1–3 with roots on string 3, fret 1 and string 1, fret 3.
How it is built
Formula 1, 2, 3, 4, 5, 6, 7
How do you play the B♭ major scale on bass?
B♭ major in box 1 runs from fret 1 to fret 3, 8 notes across 4 strings, from F on the E string at fret 1 up to B♭ on the G string at fret 3. The root falls on the A string at fret 1 and the G string at fret 3.
Every note in this box, string by string
| String | Frets | Notes |
|---|---|---|
| 4 (E) | 1, 3 | F, G |
| 3 (A) | 1, 3 | B♭, C |
| 2 (D) | 1, 3 | E♭, F |
| 1 (G) | 2, 3 | A, B♭ |
Box 2 · frets 3–6
B♭ major in box 2 runs from fret 3 to fret 6, 10 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, 5, 6 | G, A, B♭ |
| 3 (A) | 3, 5, 6 | C, D, E♭ |
| 2 (D) | 3, 5 | F, G |
| 1 (G) | 3, 5 | B♭, C |
Box 3 · frets 6–8
B♭ major in box 3 runs from fret 6 to fret 8, 8 notes across 4 strings, from B♭ on the E string at fret 6 up to E♭ on the G string at fret 8. The root falls on the E string at fret 6 and the D string at fret 8.
Every note in this box, string by string
| String | Frets | Notes |
|---|---|---|
| 4 (E) | 6, 8 | B♭, C |
| 3 (A) | 6, 8 | E♭, F |
| 2 (D) | 7, 8 | A, B♭ |
| 1 (G) | 7, 8 | D, E♭ |
Box 4 · frets 8–11
B♭ major in box 4 runs from fret 8 to fret 11, 9 notes across 4 strings, from C on the E string at fret 8 up to F on the G string at fret 10. The root falls on the D string at fret 8.
Every note in this box, string by string
| String | Frets | Notes |
|---|---|---|
| 4 (E) | 8, 10, 11 | C, D, E♭ |
| 3 (A) | 8, 10 | F, G |
| 2 (D) | 8, 10 | B♭, C |
| 1 (G) | 8, 10 | E♭, F |
Box 5 · frets 10–13
B♭ major in box 5 runs from fret 10 to fret 13, 11 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, 11, 13 | D, E♭, F |
| 3 (A) | 10, 12, 13 | G, A, B♭ |
| 2 (D) | 10, 12, 13 | C, D, E♭ |
| 1 (G) | 10, 12 | F, G |
Why it sounds like that
B♭ major is built from the whole-step, whole-step, half-step pattern W, W, H, W, W, W, H. It is the Ionian mode of B♭. Compare its seven notes to the five-note B♭ major pentatonic, which omits E♭ and A.
When to use it
B♭ major fits B♭ major and B♭ 5th chords. Use it over I–IV–V progressions in B♭, such as B♭–E♭–F. The subdominant E♭ gives this key a warm, rounded character in bass lines.
Which position to practise
Practise Box 1 first. It places the root B♭ on string 3, fret 1 and keeps the scale within frets 1–3.
Common questions
What notes are in the B♭ major scale?
B♭ major contains B♭, C, D, E♭, F, G, and A. The scale follows the pattern W, W, H, W, W, W, H. These notes form the Ionian mode on B♭. It is also spelled A♯ in enharmonic notation for the same sounding root.
Which chords fit the B♭ major scale?
B♭ major fits B♭ major and B♭ 5th chords. It also works over the diatonic chords of B♭ major. Use it for progressions like B♭–E♭–F.
What is the difference between B♭ major and B♭ major pentatonic?
B♭ major has seven notes; B♭ major pentatonic has five. The pentatonic omits E♭ and A. The full scale adds the fourth and seventh degrees.