G# Viennese trichord
The G# Viennese trichord chord consists of the G# (Perfect unison), A (Minor second) and D (Diminished fifth) notes.

How to play the G# Viennese trichord chord
- Find G# (Root) on the piano keyboard
- Add A (Minor second) — 1 semitone above G#
- Add D (Diminished fifth) — 6 semitones above G#
- Press all 3 notes simultaneously to sound the G# Viennese trichord chord