Triads — Open Music Theory
Open Music Theory
Supports: augmented triad formula and written tone spelling
Scope: Supports the chord formula and spelling only; keyboard layouts are PianoGrid examples, and no fingering is assigned.
The D flat augmented chord contains D♭, F and A. Written D♭aug or D♭+, it has formula 1–3–♯5. Locate A natural, then compare root position with two inversions.
Build the D flat augmented chord by raising A♭, the fifth of D♭ major, to A natural. Keep D♭ as the root and F as the major third. The root-to-fifth span increases from seven to eight semitones; no seventh is added to this three-note collection.
Preserve the written note spelling shown for this chord.
Choose a position to keep the written notes, sounding keys, bass note, playback and print reference synchronized.
Choose D♭, F and A in the exercise. Selecting A♭ instead restores D♭ major. The reference contains one black-key pitch class and two white-key pitch classes; click order and octave do not affect this note-set check.
D♭aug uses 1–3–♯5: D♭–F–A.
Compared with D♭ major, raise the fifth by one semitone.
The chord tones stay the same while the lowest chord tone changes.
| Position | Symbol | Notes, low to high | Bass |
|---|---|---|---|
| Root position, current selection | D♭aug | D♭4–F4–A4 | D♭4 |
| First inversion | D♭aug/F | F4–A4–D♭5 | F4 |
| Second inversion | D♭aug/A | A4–D♭5–F5 | A4 |
The D flat augmented chord diagrams show pitches and octave labels without prescribed fingers. F begins the first inversion and A the second. Read A as natural in each position; its key differs from the A♭ used by the major triad.
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: augmented triad formula and written tone spelling
Scope: Supports the chord formula and spelling only; keyboard layouts are PianoGrid examples, and no fingering is assigned.
D♭, F and A: root, major third and augmented fifth. The compact symbols D♭aug and D♭+ identify this triad.
The D flat augmented chord raises the perfect fifth A♭ by a semitone. A natural preserves the letter needed for a fifth above D♭ while giving the required augmented interval.
No. The plus sign marks the raised fifth of this triad. A seventh-chord symbol would require an additional note; this page supplies a three-note reference.
F starts the first inversion and A the second. Root position starts on D♭. The three sounding pitch classes remain the same while their low-to-high order changes.
Select the three pitch classes that make D♭aug, then check your answer.
This one-octave exercise checks pitch classes. Order and octave do not affect the result; fingering and live performance are not assessed.
One octave, C through B. Select a key again to remove it.
Chord tones: D♭–F–A · Formula: 1, 3, ♯5
Dots mark the notes to play. C4 is middle C. Numbers identify octaves, not fingers.