A Viennese trichord/C#

The A Viennese trichord consists of the A (Perfect unison), Bb (Minor second) and Eb (Diminished fifth) notes, with C# as the bass note.

Piano keyboard showing the notes for a A Viennese trichord/C#

How to play the A Viennese trichord/C#

  1. Play C# as the lowest bass note in the left hand
  2. Find A (Root) on the piano keyboard
  3. Add Bb (Minor second) — 1 semitone above A
  4. Add Eb (Diminished fifth) — 6 semitones above A
  5. Press all 4 notes simultaneously to sound the A Viennese trichord/C#

Related slash chords