The Bbmaj7 chord contains B♭, D, F and A. Also written B♭maj7, it combines a B-flat major triad with a major seventh. Locate the four keys, then compare root position with three inversions.
Build the Bbmaj7 chord with degrees 1–3–5–7. A natural is the major seventh, eleven semitones above B♭. B♭7 uses A♭ instead; the root, major third and perfect fifth remain B♭, D and F.
Preserve the written chord spelling shown here; keyboard equivalence does not rename the chord.
Choose a position to keep the four written notes, sounding keys, bass note, playback and print reference synchronized.
Build the Bbmaj7 chord by selecting B♭, D, F and A in the exercise. Keep A natural: choosing A♭ would change the seventh. This exercise checks pitch classes, not fingering, rhythm or live piano performance.
B♭maj7 uses 1–3–5–7: B♭–D–F–A.
a major triad plus a major seventh
Compared with B♭ major, add the major seventh above the root.
A seventh chord has four chord tones and therefore four positions: root position plus three inversions. The slash symbol identifies the written bass note.
| Position | Symbol | Notes, low to high | Bass |
|---|---|---|---|
| Root position, current selection | B♭maj7 | B♭3–D4–F4–A4 | B♭3 |
| First inversion | B♭maj7/D | D4–F4–A4–B♭4 | D4 |
| Second inversion | B♭maj7/F | F4–A4–B♭4–D5 | F4 |
| Third inversion | B♭maj7/A | A4–B♭4–D5–F5 | A4 |
The Bbmaj7 chord diagrams identify keys and note order without prescribing fingers. Each inversion preserves B♭, D, F and A while changing the bass note. Read the selected note list before choosing a comfortable hand position.
Use the written notes, keyboard positions and playback without treating the diagram as a required hand shape.
Read left- and right-hand finger numbersOpen Music Theory
Supports: Major Seventh chord construction, written spelling and inversion principles
Scope: Supports theory and spelling only; keyboard layouts are PianoGrid examples, and no fingering is assigned.
B♭, D, F and A: root, major third, perfect fifth and major seventh. The formula is 1–3–5–7.
No. The Bbmaj7 chord contains A natural; B♭7 contains A♭. Their B♭, D and F chord tones remain unchanged, so compare the seventh when reading a chart.
No. A Bbmaj7 chord starts on B♭, a semitone below B. Bmaj7 contains B, D♯, F♯ and A♯. The flat in Bbmaj7 changes the root, not the major-seventh quality.
D starts the first inversion, F the second and A the third. Root position starts on B♭. Each displayed position keeps all four chord tones in a different order.
Select the four pitch classes that make B♭maj7, then check your answer.
This one-octave exercise checks the exact four-note pitch-class set. Order and inversion do not affect the result; missing and extra notes are reported, while fingering and live performance are not assessed.
One octave, C through B. Select a key again to remove it.
Chord tones: B♭–D–F–A · Formula: 1, 3, 5, 7
Dots mark the notes to play. C4 is middle C. Numbers identify octaves, not fingers.