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New Released in April 2026

C Sharp Augmented Chord on Guitar (C#aug)

C sharp augmented (C#aug) on the guitar: press the strings shown below; some strings ring open. Strum from the 5th string down and you hear C#, E#, G##. First the picture, then each finger, then three chords to practise C#aug with.

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  • MIDI keyboard
  • Digital or acoustic piano
  • Guitar
  • Computer, phone or tablet
4fr××
C#aug C# E# G##

C#aug guitar chord: shape and fingers

4fr××
C#aug C# E# G##

Fingers and frets

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

Which strings to strum

x4322x: × = do not play, 0 = open string.

Where C#aug is used

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

C#aug string by string

5th string (A)fret 4: C#
4th string (D)fret 3: E#
3rd string (G)fret 2: G##
2nd string (B)fret 2: C#

Slide this shape along the neck: fret 2 = Baug, fret 3 = Caug, fret 5 = Daug, fret 6 = Ebaug.

A short C#aug routine

  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 C#aug and C# for one minute, then try F#.

Chords that go with C#aug

Start with C#: it is the change you will meet most often after C#aug.

C# · F# · G#

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

Play C#aug in a game

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

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C#aug on piano · Easy guitar chords · Guitar chord game

Common questions

What notes are in the C#aug guitar chord?

C sharp augmented has three notes: C#, E#, G##. On the guitar some of them are doubled on different strings, so all six (or five) strings sound like one chord.

Which fingers do I use for C#aug?

Little finger: 5th string (A), fret 4, ring finger: 4th string (D), fret 3, index finger: 3rd string (G), fret 2, middle finger: 2nd string (B), fret 2.

Will the game recognise my C#aug?

If C#, E#, G## 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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