A#aug Aumentado Acorde

A major triad with a raised fifth. Creates a mysterious, unsettled sound.

A#aug Acorde — Quick Answer & Harmonic Definition

The A#aug (Augmented) chord consists of the notes A#, D, F#. It is constructed from the root note A# using the augmented interval formula (0–4–8 semitones).

Formula: 0 – 4 – 8
Notes
A# – D – F#
Intervals (semitones)
0 – 4 – 8
Type
Triad

A#aug on Piano

Press highlighted keys simultaneously to play the A#aug chord.

R
A# (Root (R))
2
D (Major 3rd)
3
F# (Augmented 5th (♯5))

A#aug on Guitar

The A#aug chord uses notes A#, D, F#. Build a voicing by finding these notes on any strings — root on the 6th string is a common starting point for barre chord shapes.

Interval Analysis

Degree Interval Name Semitones Note in A#
Root Root (R) 0 A#
3rd Major 3rd 4 D
5th Augmented 5th (♯5) 8 F#

About the A# Aumentado Chord

The A#aug chord (A# Aumentado) consists of 3 notes: A#, D, F#. A major triad with a raised fifth. Creates a mysterious, unsettled sound.

To build any augmented chord, apply intervals of 0, 4, 8 semitones above the root. Starting from A#: the notes land on A#, D, F#.

Playing A#aug on Piano

Press A#, D, F# simultaneously. In root position, A# is lowest. First inversion places D in the bass for a lighter sound; second inversion uses F# as the bass note.

Common Chord Progressions Using A#aug

  • I–IV–V: A#aug – D#aug – Faug (blues and rock)
  • I–V–vi–IV: A#aug – F – Gm – D# (pop staple)
  • I–vi–IV–V: A#aug – Gm – D# – F (50s progression)

The A#aug Chord in Context

The A#aug (Aumentado) chord features a distinctive a major triad with a raised fifth. creates a mysterious, unsettled sound. built from the intervals 0–4–8. It provides rich harmonic color and tension across pop, jazz, classical, and contemporary compositions.

Other A# Chords

A#
Major
A#m
Minor
A#7
Dominant 7th
A#maj7
Major 7th
A#m7
Minor 7th
A#dim
Diminished

Aumentado Chord in All 12 Keys

Caug C#aug Daug D#aug Eaug Faug F#aug Gaug G#aug Aaug A#aug Baug
Virtual Piano
Play A#aug on piano
Virtual Guitar
See on the fretboard
A# Scale
Notes that fit A#aug
Songs
Find songs using A#aug

Knowledge Base & FAQs

A#aug Chord — Frequently Asked Questions

Everything you need to know about our browser-based Web Audio engine, instruments, and music theory workspace.

What notes are in the A#aug chord?

The A# Aumentado chord contains: A#, D, F#.

These notes are derived by applying the augmented interval formula (0–4–8 semitones) to the root note A#.

What is the A#aug chord used for?

A major triad with a raised fifth.

Creates a mysterious, unsettled sound. The A#aug chord is used across pop, rock, jazz, and classical music. As the I chord in the key of A# major, it functions as the most stable resting point in progressions.

How do you play A#aug on piano?

On piano, play A#, D, F# simultaneously.

In root position, A# is the lowest note. Inversions move the bass note up — first inversion has D lowest, second inversion has F# lowest.

How many notes are in a augmented chord?

A augmented chord has 3 notes: A#, D, F# (in A#).

It is a triad — the most fundamental chord type.

What is the difference between A# major and A# minor?

The A# major chord (A#–D–F) uses a major third (4 semitones), giving it a bright, happy sound.

The A# minor chord (A#–C#–F) uses a minor third (3 semitones), giving it a darker, emotional sound.

What key does A#aug belong to?

A#aug naturally serves as the I chord in the key of A# major.

It also appears as IV in the key of F major, and as V in the key of D# major.

Can I play A#aug on ukulele?

Yes.

The ukulele uses GCEA tuning with 4 strings. The A#aug chord notes (A#, D, F#) can be fretted on a ukulele, though the shapes differ from guitar due to the 4-string layout and shorter scale.

What chords go well with A#aug?

In the key of A# major, A#aug pairs naturally with D# major (IV), F major (V), and Gm (vi).

The classic I–IV–V (A#aug–D#–F) is the foundation of blues, country, and rock.

What is a chord inversion of A#aug?

An inversion places a non-root note in the bass.

A#aug root position: A# in bass. First inversion: D in bass. Second inversion: F# in bass. Inversions create smoother bass line movement without changing the harmony.

How do I memorize the notes in a augmented chord?

Remember the formula: 0–4–8 semitones from root.

For A#aug: start on A#, add 4 semitones, then 8 semitones. Practicing this across all 12 roots builds instant recognition of any augmented chord.