Bb7sus4 chord
Bb dominant 7th suspended 4th · also written A#7sus4
C4
Bb
C5
Eb
F
Ab
Want it in context? Open Bb7sus4 on the full piano.
Notes
- BbR
- Eb4
- F5
- Abb7
Formula: R – 4 – 5 – b7
Bb7sus4 inversions
The same notes, with a different note in the bass.
Root position Bb7sus4
C4
Bb
C5
Eb
F
Ab
1st inversion Bb7sus4/Eb
C5
Eb
F
Ab
Bb
C6
2nd inversion Bb7sus4/F
C5
F
Ab
Bb
C6
Eb
3rd inversion Bb7sus4/Ab
C5
Ab
Bb
C6
Eb
F
More Bb chords
Dominant 7th suspended 4th chords in other keys
FAQ
What notes are in the Bb7sus4 chord?
The Bb dominant 7th suspended 4th chord (Bb7sus4) has 4 notes: Bb, Eb, F and Ab.
How do you play Bb7sus4 on the piano?
Put your right hand on Bb, Eb, F and Ab, 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 7th suspended 4th chord?
R – 4 – 5 – b7 (in semitones from the root: 0, 5, 7, 10).
Is Bb7sus4 the same as A#7sus4?
Yes. Bb and A# are the same key on the piano (enharmonic), so Bb7sus4 and A#7sus4 sound the same.