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New Released in April 2026

A Flat Augmented Chord on Guitar (Abaug)

The A flat augmented chord on guitar (Abaug) uses the notes Ab, C, E. It is an open chord: some strings ring without fingers. Strum all six strings. First the picture, then each finger, then three chords to practise Abaug with.

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  • MIDI keyboard
  • Digital or acoustic piano
  • Guitar
  • Computer, phone or tablet
4fr××
Abaug Ab C E

Abaug chord diagram

4fr××
Abaug Ab C E

Where each finger goes

  • Index: 6th string (low E), fret 4
  • Little: 4th string (D), fret 6
  • Middle: 3rd string (G), fret 5
  • Ring: 2nd string (B), fret 5

Strings to play

4x655x: × = do not play, 0 = open string.

Chords that go with Abaug

Start with Ab: it is the change you will meet most often after Abaug.

Ab · Db · Eb

The notes inside Abaug, string by string

6th string (low E)fret 4: Ab
4th string (D)fret 6: Ab
3rd string (G)fret 5: C
2nd string (B)fret 5: E

Slide this shape along the neck: fret 2 = F#aug, fret 3 = Gaug, fret 5 = Aaug, fret 6 = Bbaug.

Learning Abaug step by step

  1. Put the shape down slowly and pick each string once to check it rings.
  2. Lift the hand, then land all fingers together. Repeat ten times.
  3. Switch between Abaug and Ab for one minute, then try Db.

Where Abaug is used

A common move is Ab → Abaug → C#: the raised note in Abaug pushes up into C#.

ChordRunner on a phone next to an acoustic guitar, with a chord block on screen

Make Abaug automatic

Practise Abaug in ChordRunner: when its symbol appears, play Ab, C, E and the microphone or MIDI keyboard confirms it. MIDI keyboard or microphone, both work.

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Abaug on piano · Easy guitar chords · Guitar chord game

Common questions

Is Abaug easy on guitar?

Yes, it is one of the open chords beginners learn first. Start slowly, check that every string rings, then practise switching to Ab.

Which fingers do I use for Abaug?

Index finger: 6th string (low E), fret 4, little finger: 4th string (D), fret 6, middle finger: 3rd string (G), fret 5, ring finger: 2nd string (B), fret 5.

Will the game recognise my Abaug?

If Ab, C, E ring together, yes: ChordRunner listens through the microphone and also accepts a USB MIDI keyboard.

Your instrument is the controller.

ChordRunner is a browser game that teaches piano and guitar chords: a chord appears on screen, you play it on a real instrument, and your runner jumps. MIDI keyboard or microphone, both work.

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