A# Viennese trichord/C

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

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

How to play the A# Viennese trichord/C chord

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

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