B♭ dominant seventh chord on piano
Find the B♭ dominant seventh notes, inspect their piano positions, and compare inversions with an audible reference.
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Compare another chord
C Minor
C4 · E♭4 · G4
Notes and intervals
| Degree | Notes | Semitones |
|---|---|---|
| 1 | B♭4 | 0 |
| 3 | D5 | 4 |
| 5 | F5 | 7 |
| ♭7 | A♭5 | 10 |
The notes and their roles
B♭ dominant seventh contains B♭, D, F and A♭. From the root, the semitone offsets are 0, 4, 7, 10. The degree formula 1, 3, 5, ♭7 describes each member relative to the root, not its order in a particular voicing.
| Note | Role | Semitones above root |
|---|---|---|
| B♭ | Root | 0 |
| D | Major third | 4 |
| F | Perfect fifth | 7 |
| A♭ | Minor seventh | 10 |
Read this shape accurately
First inspect the major-triad foundation of this seventh chord. B-flat is followed by the natural notes D and F. The chord does not include E-flat even though E-flat appears in the B-flat-major key signature.
Hear the seventh
The seventh here is A♭. Keeping B♭ · D · F fixed and changing only that note to A produces B♭ major seventh. Compare both at the same octave and volume so the one-note difference stays easy to hear.
A dominant-seventh chord is a chord quality. Calling it dominant does not, by itself, establish the key or prove that this chord is functioning as V in a progression.
Choose a bass note
The root-position octave example is B♭4 · D5 · F5 · A♭5. Inversions put a different member in the bass while retaining B♭ as the root. The table gives pitch-class order; move the leading notes up an octave as needed to keep each example ascending.
| Position | Notes from the bass | Bass |
|---|---|---|
| Root position | B♭ · D · F · A♭ | B♭ |
| First inversion | D · F · A♭ · B♭ | D |
| Second inversion | F · A♭ · B♭ · D | F |
| Third inversion | A♭ · B♭ · D · F | A♭ |
A short listening check
Play B♭ dominant seventh together, then as separate notes. Name the major third before looking at the display. Repeat in first inversion and check that D is the bass while B♭ remains the root.
- Choose the displayed root and quality in the chord explorer.
- Compare root position with one inversion at the same tempo.
- Save both examples in a named practice collection, or export a reference with note names.
Sources and methods
- Introduction to seventh chords
- Enharmonic notes
- ChordLilt product contract
- Simple suspended chords