The D♭ Half-Diminished Seventh chord contains D♭, F♭, A𝄫, C♭. Formula: 1–♭3–♭5–♭7.
A d♭ half-diminished seventh is a diminished triad plus a minor seventh.
This spelling includes F♭, A𝄫, C♭. Preserve the theoretical written spelling even when an enharmonic name shares the same piano key.
Choose a position to keep the four written notes, sounding keys, bass note, playback and print reference synchronized.
D♭m7♭5 uses 1–♭3–♭5–♭7: D♭–F♭–A𝄫–C♭.
a diminished triad plus a minor seventh
Compared with D♭ diminished, add the minor 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 | D♭m7♭5 | D♭4–F♭4–A𝄫4–C♭5 | D♭4 |
| First inversion | D♭m7♭5/F♭ | F♭4–A𝄫4–C♭5–D♭5 | F♭4 |
| Second inversion | D♭m7♭5/A𝄫 | A𝄫4–C♭5–D♭5–F♭5 | A𝄫4 |
| Third inversion | D♭m7♭5/C♭ | C♭5–D♭5–F♭5–A𝄫5 | C♭5 |
Fingerings are not included on this page. The diagram shows note positions, not a prescribed hand shape.
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: Half-Diminished Seventh chord construction, written spelling and inversion principles
Scope: Supports theory and spelling only; keyboard layouts are PianoGrid examples, and no fingering is assigned.
D♭, F♭, A𝄫, C♭.
1–♭3–♭5–♭7.
Three inversions, in addition to root position.
Select the four pitch classes that make D♭m7♭5, 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: D♭–F♭–A𝄫–C♭ · Formula: 1, ♭3, ♭5, ♭7
Dots mark the notes to play. C4 is middle C. Numbers identify octaves, not fingers.