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C Augmented Chord on Piano

Caug C E G♯ Formula 1 3 #5 3 notes

Open Caug in the studio
Notes

What notes are in the C Augmented chord?

The C Augmented chord has 3 notes: C, E, G♯. Two major thirds stacked: 4 half steps, then 4 more. The raised fifth makes it unstable, and the three notes split the octave in equal parts.

NoteInterval from the rootHalf steps
CRoot0
EMajor 3rd4
G♯Augmented 5th8
Inversions and fingering

Every way to play C Augmented

The same notes in a different order. The lowest note changes the name after the slash; the fingering below is the usual one - right hand from the lowest key up, left hand from the lowest key up too.

Root position Caug

C Augmented chord, root position: C E G♯CEG♯

C – E – G♯

Right hand 1-3-5Left hand 5-3-1

1st inversion Caug/E

C Augmented chord, 1st inversion: E G♯ CECG♯

E – G♯ – C

Right hand 1-2-5Left hand 5-3-1

The piano studio names these keys Eaug: the same notes, read from another root.

2nd inversion Caug/G♯

C Augmented chord, 2nd inversion: G♯ C ECEG♯

G♯ – C – E

Right hand 1-3-5Left hand 5-2-1

The piano studio names these keys G♯aug: the same notes, read from another root.

Where it lives

Keys and scales with C Augmented

Every key where Caug is one of the seven chords, with its Roman numeral, and the scales whose notes include all of it - the ones to improvise over it.

Caug is not a diatonic chord of any major or natural minor key.

Scales that contain all its notes

Questions

Frequently asked

What notes are in the C Augmented chord?

The C Augmented chord (Caug) is made of C, E, G♯. Its formula is 1 3 #5 - the root, then the intervals of a augmented chord.

How do you play Caug on the piano?

Put your right thumb on C and play the other notes with fingers 1-3-5. With the left hand, use fingers 5-3-1 from the lowest key up.

What are the inversions of Caug?

root position Caug (C E G♯); 1st inversion Caug/E (E G♯ C); 2nd inversion Caug/G♯ (G♯ C E).

Play it for real

Hold Caug and build a progression on it

The GOONS piano studio has up to 88 keys, real piano samples, MIDI keyboard support, chord pads in any key and a sequencer. It comes with the GOONS Studio subscription - start with the 7-day free trial, no card required.