The C augmented chord (Caug) contains C, E and G♯. Use the keyboard diagram to find the notes, hear the chord and compare root position with two inversions.
C augmented is an augmented triad built from C, E and G♯. Compared with C major, the fifth moves from G to G♯.
Preserve the written note spelling shown for this chord.
Choose a position to keep the written notes, sounding keys, bass note, playback and print reference synchronized.
Caug uses 1–3–♯5: C–E–G♯.
Compared with C major, raise the fifth by one semitone.
The chord tones stay the same while the lowest chord tone changes.
| Position | Symbol | Notes, low to high | Bass |
|---|---|---|---|
| Root position, current selection | Caug | C4–E4–G♯4 | C4 |
| First inversion | Caug/E | E4–G♯4–C5 | E4 |
| Second inversion | Caug/G♯ | G♯4–C5–E5 | G♯4 |
Fingerings are not included on this page. The diagram shows note positions, not a prescribed hand shape.
Use the written notes, keyboard positions and playback without treating the diagram as a required hand shape.
Read left- and right-hand finger numbersOpen Music Theory
Supports: augmented triad formula and written tone spelling
Scope: Supports the chord formula and spelling only; keyboard layouts are PianoGrid examples, and no fingering is assigned.
C augmented contains C, E and G♯.
1–3–♯5.
C major is C–E–G. C augmented raises the fifth from G to G♯.
Select the three pitch classes that make Caug, then check your answer.
This one-octave exercise checks pitch classes. Order and octave do not affect the result; fingering and live performance are not assessed.
One octave, C through B. Select a key again to remove it.
Chord tones: C–E–G♯ · Formula: 1, 3, ♯5
Dots mark the notes to play. C4 is middle C. Numbers identify octaves, not fingers.