How do you play the G maj9(#11)/A# chord?

To play the G maj9(#11)/A# chord on piano, play the G maj9(#11) chord (G, B, D, F#, A and C#) with A# as the lowest bass note. Place the A# 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 maj9(#11)/A# chord means a G maj9(#11) chord with A# in the bass.

G maj9(#11)/A#

Q: What notes are in the G maj9(#11)/A# chord?

The G maj9(#11)/A# chord uses the 6 notes of the G maj9(#11) chord — G (Perfect unison), B (Major third), D (Perfect fifth), F# (Major seventh), A (Major ninth) and C# (Augmented eleventh) — with A# played as the bass note in the lowest register.

The G maj9(#11) chord consists of the G (Perfect unison), B (Major third), D (Perfect fifth), F# (Major seventh), A (Major ninth) and C# (Augmented eleventh) notes, with A# as the bass note.

Piano keyboard showing the notes for a G maj9(#11)/A# chord

How to play the G maj9(#11)/A# chord

Play A# as the lowest bass note in the left hand
Find G (Root) on the piano keyboard
Add B (Major third) — 4 semitones above G
Add D (Perfect fifth) — 7 semitones above G
Add F# (Major seventh) — 11 semitones above G
Add A (Major ninth) — 14 semitones above G
Add C# (Augmented eleventh) — 18 semitones above G
Press all 7 notes simultaneously to sound the G maj9(#11)/A# chord