Bb
Bb9sus4
Notes
Bb · Eb · F · Ab · C
Intervals
- RootBb (1P)
- Perfect 4thEb (4P)
- Perfect 5thF (5P)
- Minor 7thAb (7m)
- Major 9thC (9M)
Fretboard
Adjust labels, frets, and palette in the interactive view.
About
The B♭9sus4 (B♭–E♭–F–A♭–C) extends 7sus4 with a 9th. The C adds color above the suspended structure, and the absence of the third means the chord can function either as deferred dominant tension or as a stable texture in its own right — the latter is common in gospel and R&B, where 9sus4 chords are often held for extended periods without resolving. The 4th, ♭7, and 9th are the essential tones; the 5th can be dropped. Compared to B♭7sus4, the 9th adds warmth and sophistication without increasing the sense of urgency. When it does resolve, E♭ is the typical landing.
Similar chords
Chords sharing two or more notes with this one, ranked by overlap.
Scales containing this chord
- B♭ Natural Minor (I)
- A♭ Major (II)
- A♭ Major Pentatonic (deg 2)
- C Natural Minor (VII)
- D♭ Major (VI)
- E♭ Diminished (deg 5)
- E♭ Major (V)
- E♭ Melodic Minor (V)
- F Blues (deg 3)
- F Minor Pentatonic (deg 3)
- F Natural Minor (IV)
- B♭ Dorian (I)
- B♭ Mixolydian (I)
- A♭ Lydian (II)
- A♭ Mixolydian (II)
- C Locrian (VII)
- C Phrygian (VII)
- D Locrian (VI)
- D♭ Lydian (VI)
- E♭ Dorian (V)
- E♭ Mixolydian (V)
- F Dorian (IV)
- F Phrygian (IV)
- F♯ Lydian (III)
- G Locrian (III)
- G Phrygian (III)
Scales whose notes include every chord tone. Roman numeral marks the chord root’s position in the scale; dashed badges aren’t linked yet.