Bb Suspended 4th 7th
Bb7sus4
Notes
Bb · Eb · F · Ab
Intervals
- RootBb (1P)
- Perfect 4thEb (4P)
- Perfect 5thF (5P)
- Minor 7thAb (7m)
Fretboard
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About
The B♭7sus4 (B♭–E♭–F–A♭) combines dominant function with suspended ambiguity. The E♭ replaces the third, delaying the chord’s major/minor identity, while the A♭ signals dominant territory. Resolution typically happens in one of two ways: the 4th resolves down to the 3rd, producing a standard B♭7; or the chord resolves directly to the tonic (E♭), skipping the third entirely. The 4th and ♭7 are both essential — the 4th is the suspension, the ♭7 the dominant weight. The 5th can be omitted. Compared to plain B♭sus4, 7sus4 has clear harmonic direction; compared to B♭7, it is less declarative.
Similar chords
Chords sharing two or more notes with this one, ranked by overlap.
Scales containing this chord
- B♭ Blues (deg 1)
- B♭ Minor Pentatonic (deg 1)
- B♭ Natural Minor (I)
- A♭ Diminished (deg 2)
- A♭ Major (II)
- A♭ Major Pentatonic (deg 2)
- A♭ Melodic Minor (II)
- C Natural Minor (VII)
- D♭ Major (VI)
- D♭ Major Pentatonic (deg 5)
- E♭ Diminished (deg 5)
- E♭ Harmonic Minor (V)
- E♭ Major (V)
- E♭ Melodic Minor (V)
- E♭ Natural Minor (V)
- F Blues (deg 3)
- F Minor Pentatonic (deg 3)
- F Natural Minor (IV)
- F♯ Major (III)
- B♭ Dorian (I)
- B♭ Mixolydian (I)
- B♭ Phrygian (I)
- A♭ Dorian (II)
- A♭ Lydian (II)
- A♭ Mixolydian (II)
- B Lydian (VII)
- C Locrian (VII)
- C Phrygian (VII)
- D Locrian (VI)
- D♭ Lydian (VI)
- D♭ Mixolydian (VI)
- E♭ Dorian (V)
- E♭ Mixolydian (V)
- F Dorian (IV)
- F Locrian (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.