B♭9
B♭ Dominant 9th
1 3 5 ♭7 9
Notes in B♭9
B♭R
D3
F5
A♭♭7
C9
The B♭9 chord contains 5 notes: B♭, D, F, A♭, C
Intervals
| Interval | Semitones | Note | Function |
|---|---|---|---|
| R | 0 | B♭ | Root |
| 3 | 4 | D | Major 3rd |
| 5 | 7 | F | Perfect 5th |
| ♭7 | 10 | A♭ | Minor 7th |
| 9 | 2 | C | Major 9th |
About B♭ Dominant 9th Chords
Dominant 9th chords extend the dominant 7th with a 9th, adding richness to blues and funk progressions. James Brown's rhythm guitar was built on 9th chord stabs. They have more color than a plain 7th but stay firmly in dominant territory.
Compatible Scales & Modes
These scales contain all the notes of B♭9 and can be used for soloing, improvising, and writing melodies over this chord.
B♭ Mixolydian
Contains all the chord tones. The standard scale for dominant 9th chords.
B♭ Blues Scale
Adds grit and attitude over dominant 9th voicings — essential for blues and funk.