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

How to play the G Petrushka chord/D# chord
- Play D# as the lowest bass note in the left hand
- Find G (Root) on the piano keyboard
- Add G# (Minor second) — 1 semitone above G
- Add B (Major third) — 4 semitones above G
- Add C# (Diminished fifth) — 6 semitones above G
- Add D (Perfect fifth) — 7 semitones above G
- Add F (Minor seventh) — 10 semitones above G
- Press all 7 notes simultaneously to sound the G Petrushka chord/D# chord