Ab Augmented
Abaug
Notes
Ab · C · E
Intervals
- RootAb (1P)
- Major 3rdC (3M)
- Augmented 5thE (5A)
Fretboard
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About
The A♭ augmented triad (A♭–C–E) raises the fifth by a half step, replacing the stable perfect fifth with an augmented fifth. This removes the grounding effect of the perfect fifth and gives the chord its floating, unresolved quality — every interval is a major third, making the structure symmetrical and harmonically ambiguous. It commonly appears as a passing chord between the major triad and the IV chord (A♭ → A♭+ → D♭), or as a V+ that creates extra tension before resolving. All three tones carry weight — omitting the E leaves a plain major chord, so it must be present. Augmented shapes repeat every four frets. Compared to A♭dim, augmented feels more open and less tense, but equally unstable.
Similar chords
Chords sharing two or more notes with this one, ranked by overlap.
Scales containing this chord
- A♭ Whole Tone (deg 1)
- A Harmonic Minor (VII)
- A Melodic Minor (VII)
- B♭ Whole Tone (deg 6)
- C Whole Tone (deg 5)
- D Whole Tone (deg 4)
- D♭ Diminished (deg 5)
- D♭ Harmonic Minor (V)
- D♭ Melodic Minor (V)
- E Whole Tone (deg 3)
- F Harmonic Minor (III)
- F Melodic Minor (III)
- F♯ Whole Tone (deg 2)
Scales whose notes include every chord tone. Roman numeral marks the chord root’s position in the scale; dashed badges aren’t linked yet.