# G Augmented piano chord (Gaug)

Gaug contains G, B and D♯. Two stacked major thirds. D♯ is a black key; G and B are white.

- Canonical page: https://piano.org/chords/augmented/g/
- Entity: chord:augmented:g
- Notes: G B D♯
- Formula: 1 3 ♯5
- Intervals from root: P1, M3, m6
- Interval stack (semitones): 4 4
- Also written: Gaug, Gaug, G augmented
- Parameters: A440, 12-TET, 165 mm octave, spans centre to centre

## Construction

| Degree | Note | Interval from root | Semitones |
| --- | --- | --- | --- |
| 1 | G | Perfect unison | 0 |
| 3 | B | Major third | 4 |
| ♯5 | D♯ | Minor sixth | 8 |

## Fingering

Rest your right hand over the notes with finger 1 on G, finger 3 on B, finger 5 on D♯. The left hand mirrors it.
Right hand 1-3-5, left hand 5-3-1. Source: piano.org fingering method v1.

## Inversions

| Position | Bass | Notes in order | Figured bass | Span |
| --- | --- | --- | --- | --- |
| Root position | G | G3 B3 D♯4 | 5/3 | 8 st, 110 mm |
| First inversion (Gaug/B) | B | B3 D♯4 G4 | 6/3 | 8 st, 110 mm |
| Second inversion (Gaug/D♯) | D♯ | D♯4 G4 B4 | 6/4 | 8 st, 110 mm |

## Voicings (5)

| Voicing | Notes | Span | Relation | Omits or adds |
| --- | --- | --- | --- | --- |
| Close, root position | G3 B3 D♯4 | 8 st, 110 mm | identical | none |
| Close, first inversion | B3 D♯4 G4 | 8 st, 110 mm | identical | none |
| Close, second inversion | D♯4 G4 B4 | 8 st, 110 mm | identical | none |
| Open, fifth on top | G2 D♯3 B3 | 16 st, 220 mm | identical | none |
| Root and third only | G3 B3 | 4 st, 55 mm | subset | omits D♯ |

## One-edit neighbors

| Becomes | Edit | Changes | Common tones |
| --- | --- | --- | --- |
| Gaug7 | 1 3 ♯5 ♭7 | adds F | 3 |
| G | 1 3 5 | D♯ becomes D | 2 |
| Gmaj7 | 1 3 5 7 | D♯ becomes D, F♯ | 2 |
| G7 | 1 3 5 ♭7 | D♯ becomes D, F | 2 |
| G6 | 1 3 5 6 | D♯ becomes D, E | 2 |
| Gadd9 | 1 3 5 9 | D♯ becomes D, A | 2 |
| Gm | 1 ♭3 5 | B, D♯ becomes B♭, D | 1 |
| Gdim | 1 ♭3 ♭5 | B, D♯ becomes B♭, D♭ | 1 |
| Gsus2 | 1 2 5 | B, D♯ becomes A, D | 1 |
| Gsus4 | 1 4 5 | B, D♯ becomes C, D | 1 |

## Set theory

- Absolute pitch classes: {7, 11, 3}
- Relative pitch classes: [0, 4, 8]
- Normal order: [3, 7, 11]
- Prime form: (048)
- Forte number: 3-12
- Interval vector: <000300>

## Frequencies (close root position)

| Note | MIDI | Frequency |
| --- | --- | --- |
| G3 | 55 | 196.00 Hz |
| B3 | 59 | 246.94 Hz |
| D♯4 | 63 | 311.13 Hz |

## Questions and answers

### What notes are in Gaug?

Gaug contains G, B and D♯. The formula is 1, 3, ♯5.

### How do you play Gaug on piano?

Play G, B and D♯ together. Right hand fingers 1, 3, 5; left hand 5, 3, 1. D♯ is a black key; G and B are white.

### What are the inversions of Gaug?

3 positions: root position G B D♯, Gaug/B, Gaug/D♯.

### What is the difference between Gaug and Gaug7?

Adds F. 3 of the notes are shared.

### What is an easy Gaug for small hands?

The root and third only voicing, G3 B3, spans 4 semitones or about 55 mm.

### What are the frequencies of Gaug?

From G3 at A440 in 12-TET: 196.00, 246.94, 311.13 Hz.

### What is the set class of Gaug?

Prime form (048), Forte 3-12, interval vector &lt;000300&gt;.

### How do I transpose Gaug to another key?

Keep the 1, 3, ♯5 formula on the new root. Caug is C, E, G♯; D♭aug is D♭, F, A.

## Provenance

Every derived value above is computed by the piano.org theory kernel from the root, the quality and the stated parameters. Nothing is hand-entered per chord.

Machine record: https://piano.org/api/knowledge/v1/entities/chord:augmented:g
Last reviewed: 2026-08-12