Bbmaj9 chord
Bb major 9th · also written A#maj9
C4
Bb
C5
D
F
A
C
Want it in context? Open Bbmaj9 on the full piano.
Notes
- BbR
- D3
- F5
- A7
- C9
Formula: R – 3 – 5 – 7 – 9
Bbmaj9 inversions
The same notes, with a different note in the bass.
Root position Bbmaj9
C4
Bb
C5
D
F
A
1st inversion Bbmaj9/D
C5
D
F
A
Bb
C6
2nd inversion Bbmaj9/F
C5
F
A
Bb
C6
D
3rd inversion Bbmaj9/A
C5
A
Bb
C6
D
F
More Bb chords
Major 9th chords in other keys
FAQ
What notes are in the Bbmaj9 chord?
The Bb major 9th chord (Bbmaj9) has 5 notes: Bb, D, F, A and C.
How do you play Bbmaj9 on the piano?
Put your right hand on Bb, D, F, A and C, starting from Bb. A common fingering for three-note chords is thumb (1), middle finger (3) and little finger (5).
What is the formula of a major 9th chord?
R – 3 – 5 – 7 – 9 (in semitones from the root: 0, 4, 7, 11, 14).
Is Bbmaj9 the same as A#maj9?
Yes. Bb and A# are the same key on the piano (enharmonic), so Bbmaj9 and A#maj9 sound the same.