G# 7(b5)/C#

The G# 7(b5) chord consists of the G# (Perfect unison), C (Major third), D (Diminished fifth) and F# (Minor seventh) notes, with C# as the bass note.

Piano keyboard showing the notes for a G# 7(b5)/C# chord

How to play the G# 7(b5)/C# chord

  1. Play C# as the lowest bass note in the left hand
  2. Find G# (Root) on the piano keyboard
  3. Add C (Major third) — 4 semitones above G#
  4. Add D (Diminished fifth) — 6 semitones above G#
  5. Add F# (Minor seventh) — 10 semitones above G#
  6. Press all 5 notes simultaneously to sound the G# 7(b5)/C# chord

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