The G#mb5 chord is a diminished triad. They are mainly used as substitutes for dominant seventh chords, or as a second scale degree in a minor key or minor cadence.

The G#o Half-Diminished Chord on Guitar

Fingering the G#mb5 Chord

  • Use your middle finger on the 4th fret of the low E string
  • Place your ring finger on the 4th fret of the G string
  • Put your index finger on the 3rd fret of the B string
  • Place your pinky on the 4th fret of the high E string
  • Strum all the strings together, but mute the A and D string with your middle finger

Chord Attributes

  • Intervals: 1 – b3 – b5
  • Notes: G# – B – D
  • Chord Symbols: G#mb5, G#o, G#dim
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