How do you play the G# m7(#11)/C chord?

To play the G# m7(#11)/C chord on piano, play the G# m7(#11) chord (G#, B, D#, F# and D) 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(#11)/C chord means a G# m7(#11) chord with C in the bass.

G# m7(#11)/C

Q: What notes are in the G# m7(#11)/C chord?

The G# m7(#11)/C chord uses the 5 notes of the G# m7(#11) chord — G# (Perfect unison), B (Minor third), D# (Perfect fifth), F# (Minor seventh) and D (Augmented eleventh) — with C played as the bass note in the lowest register.

The G# m7(#11) chord consists of the G# (Perfect unison), B (Minor third), D# (Perfect fifth), F# (Minor seventh) and D (Augmented eleventh) notes, with C as the bass note.

Piano keyboard showing the notes for a G# m7(#11)/C chord

How to play the G# m7(#11)/C chord

Play C as the lowest bass note in the left hand
Find G# (Root) on the piano keyboard
Add B (Minor third) — 3 semitones above G#
Add D# (Perfect fifth) — 7 semitones above G#
Add F# (Minor seventh) — 10 semitones above G#
Add D (Augmented eleventh) — 18 semitones above G#
Press all 6 notes simultaneously to sound the G# m7(#11)/C chord