Guitar Chord G#aug: Structure, Notes and Theory

G#aug — a chord built on the note “G#” with a bright, slightly “sliding” character that pushes the harmony forward. Effective in modulations and unexpected transitions.

Formula and Structure of the G#aug Chord

Interval formula from the root note: 1 — 3 — #5. The chord consists of the following notes:

• Ab — unison and the main tonal anchor.
• C — major third with a bright major quality and clear stability above the tonic.
• E — augmented fifth, driving motion forward and best avoided in the bass.

Together, these notes form the harmonic foundation of the G#aug chord, defining its sound and role in the musical context.

Alternative Names for the G#aug Chord

This chord may appear under different names:

• G#aug5
• G#+
• G#+5

All variants refer to the same harmonic structure.

Using the G#aug Chord

Place the #5 in the top voice to emphasize forward motion. Use in passing chords or when preparing modulation. Can be applied for a “color” dominant before resolution.

Conclusion

G#aug is an expressive and versatile chord. Learn several fingerings, experiment with different positions and voice spacing, then try weaving it into your own playing — this will help you quickly find your unique tone.