Bb13 chord
Bb dominant 13th · also written A#13
C4
Bb
C5
D
F
Ab
C
G
Want it in context? Open Bb13 on the full piano.
Notes
- BbR
- D3
- F5
- Abb7
- C9
- G13
Formula: R – 3 – 5 – b7 – 9 – 13
Bb13 inversions
The same notes, with a different note in the bass.
Root position Bb13
C4
Bb
C5
D
F
Ab
1st inversion Bb13/D
C5
D
F
Ab
Bb
C6
2nd inversion Bb13/F
C5
F
Ab
Bb
C6
D
3rd inversion Bb13/Ab
C5
Ab
Bb
C6
D
F
More Bb chords
Dominant 13th chords in other keys
FAQ
What notes are in the Bb13 chord?
The Bb dominant 13th chord (Bb13) has 6 notes: Bb, D, F, Ab, C and G.
How do you play Bb13 on the piano?
Put your right hand on Bb, D, F, Ab, C and G, 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 13th chord?
R – 3 – 5 – b7 – 9 – 13 (in semitones from the root: 0, 4, 7, 10, 14, 21).
Is Bb13 the same as A#13?
Yes. Bb and A# are the same key on the piano (enharmonic), so Bb13 and A#13 sound the same.