How do you play the G m7(b9)(#9)/C# chord?

To play the G m7(b9)(#9)/C# chord on piano, play the G m7(b9)(#9) chord (G, A#, D, F, G# and A#) 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(b9)(#9)/C# chord means a G m7(b9)(#9) chord with C# in the bass.

G m7(b9)(#9)/C#

Q: What notes are in the G m7(b9)(#9)/C# chord?

The G m7(b9)(#9)/C# chord uses the 6 notes of the G m7(b9)(#9) chord — G (Perfect unison), A# (Minor third), D (Perfect fifth), F (Minor seventh), G# (Minor ninth) and A# (Minor tenth) — with C# played as the bass note in the lowest register.

The G m7(b9)(#9) chord consists of the G (Perfect unison), A# (Minor third), D (Perfect fifth), F (Minor seventh), G# (Minor ninth) and A# (Minor tenth) notes, with C# as the bass note.

Piano keyboard showing the notes for a G m7(b9)(#9)/C# chord

How to play the G m7(b9)(#9)/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 D (Perfect fifth) — 7 semitones above G
Add F (Minor seventh) — 10 semitones above G
Add G# (Minor ninth) — 13 semitones above G
Add A# (Minor tenth) — 15 semitones above G
Press all 7 notes simultaneously to sound the G m7(b9)(#9)/C# chord

Related slash chords

G m7(b9)/C#
A# m7(add6)/C#
A# 7(add6)/C#