A♭ Augmented Chord

Abaug Level 5: The Abyss

A♭ Augmented (Abaug) is built from the notes Ab, C, E. Its intervals are Root — Major 3rd — Augmented 5th. Dreamlike, floating, and unresolved. The augmented triad sounds like it's suspended in mid-air — neither tense nor relaxed, just hovering.

Hear A♭ Augmented Chord

Piano sample · tap to play

Notes and intervals

Interval Semitones Note
Root 0 Ab
Major 3rd 4 C
Augmented 5th 8 E

What does a♭ augmented chord sound like?

Dreamlike, floating, and unresolved. The augmented triad sounds like it's suspended in mid-air — neither tense nor relaxed, just hovering.

A♭ Augmented Chord in music

An ethereal chord (Ab-C-E) that connects flat and natural key centres. Shares its notes with C augmented and E augmented.

How to recognise a♭ augmented chord by ear

Augmented sounds "stretched." Both intervals are major thirds, creating a wide, evenly-spaced structure. If a chord feels dreamy and weightless — like the ground has disappeared — that's augmented.

Practice identifying this chord in ChordFrog's Level 5: The Abyss .

Practice tip

Ab augmented (Ab-C-E) contains only natural notes for its upper voices (C and E), which gives it a surprising clarity despite the flat root. Compare it to C augmented (C-E-G#) — they share two notes but the different bass note completely changes the character.

Frequently asked questions

What notes are in a A♭ Augmented chord?
A♭ Augmented (Abaug) contains three notes: Ab, C, E. The intervals are Root, Major 3rd, Augmented 5th.
How do I recognise A♭ Augmented by ear?
Augmented sounds "stretched." Both intervals are major thirds, creating a wide, evenly-spaced structure. If a chord feels dreamy and weightless — like the ground has disappeared — that's augmented. Practice identifying A♭ Augmented in ChordFrog's Level 5 (The Abyss).
What level is A♭ Augmented in ChordFrog?
A♭ Augmented is introduced at Level 5: The Abyss. This is the final level, adding diminished and augmented triads for the complete chord vocabulary.

Other Ab chords

A♭ Major Chord A♭ Minor Chord A♭ Diminished Chord A♭ Sus2 Chord A♭ Sus4 Chord

All Augmented Chords chords

C Augmented Chord D♭ Augmented Chord D Augmented Chord E♭ Augmented Chord E Augmented Chord F Augmented Chord F♯ Augmented Chord G Augmented Chord A Augmented Chord B♭ Augmented Chord B Augmented Chord

Hear a♭ augmented chord for yourself

Train your ear to recognise this chord instantly with ChordFrog's progressive levels.

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