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

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