How do you play the C maj7(#11)/G# chord?

To play the C maj7(#11)/G# chord on piano, play the C maj7(#11) chord (C, E, G, B and F#) 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 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 maj7(#11)/G# chord means a C maj7(#11) chord with G# in the bass.

C maj7(#11)/G#

Q: What notes are in the C maj7(#11)/G# chord?

The C maj7(#11)/G# chord uses the 5 notes of the C maj7(#11) chord — C (Perfect unison), E (Major third), G (Perfect fifth), B (Major seventh) and F# (Augmented eleventh) — with G# played as the bass note in the lowest register.

The C maj7(#11) chord consists of the C (Perfect unison), E (Major third), G (Perfect fifth), B (Major seventh) and F# (Augmented eleventh) notes, with G# as the bass note.

Piano keyboard showing the notes for a C maj7(#11)/G# chord

How to play the C maj7(#11)/G# chord

Play G# as the lowest bass note in the left hand
Find C (Root) on the piano keyboard
Add E (Major third) — 4 semitones above C
Add G (Perfect fifth) — 7 semitones above C
Add B (Major seventh) — 11 semitones above C
Add F# (Augmented eleventh) — 18 semitones above C
Press all 6 notes simultaneously to sound the C maj7(#11)/G# chord