How do you play the G m7(b5)/C# chord?

To play the G m7(b5)/C# chord on piano, play the G m7(b5) chord (G, A#, C# and F) with C# as the lowest bass note. Place the C# note below the other chord tones. Slash chords specify a particular bass note different from the chord root.

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 G m7(b5)/C# chord means a G m7(b5) chord with C# in the bass.

G m7(b5)/C#

Q: What notes are in the G m7(b5)/C# chord?

The G m7(b5)/C# chord uses the 4 notes of the G m7(b5) chord — G (Perfect unison), A# (Minor third), C# (Diminished fifth) and F (Minor seventh) — with C# played as the bass note in the lowest register.

The G m7(b5) chord consists of the G (Perfect unison), A# (Minor third), C# (Diminished fifth) and F (Minor seventh) notes, with C# as the bass note.

Piano keyboard showing the notes for a G m7(b5)/C# chord

How to play the G m7(b5)/C# chord

Play C# as the lowest bass note in the left hand
Find G (Root) on the piano keyboard
Add A# (Minor third) — 3 semitones above G
Add C# (Diminished fifth) — 6 semitones above G
Add F (Minor seventh) — 10 semitones above G
Press all 5 notes simultaneously to sound the G m7(b5)/C# chord

Inversions with same root

C# 6(b5)

Related chords with different root

G m7(b5)
A# m6
A# m(add13)

Related slash chords

G m7(no5)/C#
G m7(#9)(no5)/C#
A# 6(sus)/C#