Bb11 chord
Bb dominant 11th · also written A#11
C4
Bb
C5
D
F
Ab
C
Eb
Want it in context? Open Bb11 on the full piano.
Notes
- BbR
- D3
- F5
- Abb7
- C9
- Eb11
Formula: R – 3 – 5 – b7 – 9 – 11
Bb11 inversions
The same notes, with a different note in the bass.
Root position Bb11
C4
Bb
C5
D
F
Ab
1st inversion Bb11/D
C5
D
F
Ab
Bb
C6
2nd inversion Bb11/F
C5
F
Ab
Bb
C6
D
3rd inversion Bb11/Ab
C5
Ab
Bb
C6
D
F
More Bb chords
Dominant 11th chords in other keys
FAQ
What notes are in the Bb11 chord?
The Bb dominant 11th chord (Bb11) has 6 notes: Bb, D, F, Ab, C and Eb.
How do you play Bb11 on the piano?
Put your right hand on Bb, D, F, Ab, C and Eb, 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 dominant 11th chord?
R – 3 – 5 – b7 – 9 – 11 (in semitones from the root: 0, 4, 7, 10, 14, 17).
Is Bb11 the same as A#11?
Yes. Bb and A# are the same key on the piano (enharmonic), so Bb11 and A#11 sound the same.