G Augmented Chord
Notes
G - B - D#
The G Augmented chord contains 3 notes: G, B, D#. It is built using the following intervals from the root: Root, Major 3rd, Minor 6th. On the piano keyboard diagram above, the highlighted keys show exactly which keys you need to press to play this chord.
How Is the G Augmented Chord Built?
An augmented triad is built with the root, a major third (4 semitones), and an augmented fifth (8 semitones). Both intervals from the root are major, creating a symmetrical structure. The formula is: Root + 4 half-steps + 4 half-steps. Because of this symmetry, augmented chords repeat every 4 semitones.
Starting from G, the notes of this chord are: G (the root), B (the Major 3rd), D# (the Minor 6th).
What Key Is the G Augmented Chord In?
Augmented chords naturally occur as the III+ chord in harmonic minor keys. For example, E augmented appears in C harmonic minor. They also function as passing chords between major chords whose roots are a whole step apart.
Fingering
Left Hand
5 - 3 - 1
Use fingers: Pinky, Middle, Thumb. Place your left hand in a relaxed position and press the corresponding keys simultaneously.
Right Hand
1 - 3 - 5
Use fingers: Thumb, Middle, Pinky. Keep your right hand curved and relaxed. These fingerings are suggestions — adjust them if you find a more comfortable position for your hand.
For more detailed fingering advice and exercises, check out our complete fingering guide.
Sound Character
The G Augmented chord sounds tense, mysterious, and dreamy. It has an unsettled quality that makes you feel like the music is floating or suspended in air. This unsettled nature makes augmented chords perfect for transitional moments, bridges, and passages where you want to add a touch of magic or uncertainty.
Common Uses of the Augmented Chord
Augmented chords are less common than major or minor chords but add a sense of mystery and tension. They frequently appear in jazz as passing chords, in classical music for dramatic effect, and in film scores to create suspense. The Beatles used augmented chords in several songs to add color to otherwise straightforward progressions.
Practice Tips for the G Augmented Chord
Use augmented chords as transitional devices. Try playing C → C+ → F and listen to how the augmented chord creates a smooth bridge. Because of its symmetrical structure, an augmented chord can resolve to multiple different chords, giving you creative flexibility.
You can also find more exercises and practice ideas on our fingerings guide and chord progressions page.
Frequently Asked Questions
When should I use an augmented chord?
Use augmented chords as passing chords between two chords whose roots are a whole step apart (like C → C+ → F), or to add dreamy, mysterious color to a progression. They work well in bridges and transitional moments.
Why does the augmented chord sound so strange?
Because it is symmetrical — every interval is a major third. This means it doesn't clearly point to any one key, creating a sense of ambiguity and floating. Our ears want it to resolve somewhere, which gives it its dreamy quality.
Learn More About Piano Chords
If you want to deepen your understanding of the G Augmented chord and piano harmony in general, these guides will help:
- All Piano Chord Types — a complete overview of every chord type with examples
- Piano Keyboard Notes — understand the layout of the keyboard and find any note
- Chord Notation Guide — learn to read chord symbols in sheet music and lead sheets
- Piano Chord Fingerings — proper finger technique for all chord types
- Chord Progressions — how to combine chords into musical sequences
- Chord Inversions — play the G Augmented chord in different positions