A Augmented Chord

Aaug Level 5: The Abyss

A Augmented (Aaug) is built from the notes A, Db, F. 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 A
Major 3rd 4 Db
Augmented 5th 8 F

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

A floating chord (A-C#-F) with an unusual, wide character. Used in chromatic progressions and as a dominant substitute in jazz.

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

A augmented (A-C#-F) has a wide, unusual quality because the augmented fifth (F) feels very distant from the root (A). Compare it to A major — the raised fifth (E to F) is a subtle change that completely destabilises the chord. Practise hearing this "widening" effect.

Frequently asked questions

What notes are in a A Augmented chord?
A Augmented (Aaug) contains three notes: A, Db, F. 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 A 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.

Coming soon

Requires iOS 16 or later.