How do you play the C# Viennese trichord/G## chord?

To play the C# Viennese trichord/G## chord on piano, play the C# Viennese trichord chord (C#, D and G) with G## as the lowest bass note. Place the G## note below the other chord tones. Slash chords specify a particular bass note different from the chord root.

What notes are in the C# Viennese trichord/G## chord?

The C# Viennese trichord/G## chord uses the 3 notes of the C# Viennese trichord chord — C# (Perfect unison), D (Minor second) and G (Diminished fifth) — with G## played as the bass note in the lowest register.

What is a slash chord?

A slash chord (or compound chord) is written as Chord/Bass and specifies both a chord and a bass note. The note to the right of the slash is played as the lowest note. The C# Viennese trichord/G## chord means a C# Viennese trichord chord with G## in the bass.

C# Viennese trichord/G##

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

How to play the C# Viennese trichord/G## chord

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

Inversions with same root

A 7(add11)(no5)

Related slash chords

G sus(#4)/A