How do you play the Gb 9(#11)/Ab chord?

To play the Gb 9(#11)/Ab chord on piano, play the Gb 9(#11) chord (Gb, Bb, Db, Fb, Ab and C) with Ab as the lowest bass note. Place the Ab 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 Gb 9(#11)/Ab chord means a Gb 9(#11) chord with Ab in the bass.

Gb 9(#11)/Ab

Q: What notes are in the Gb 9(#11)/Ab chord?

The Gb 9(#11)/Ab chord uses the 6 notes of the Gb 9(#11) chord — Gb (Perfect unison), Bb (Major third), Db (Perfect fifth), Fb (Minor seventh), Ab (Major ninth) and C (Augmented eleventh) — with Ab played as the bass note in the lowest register.

The Gb 9(#11) chord consists of the Gb (Perfect unison), Bb (Major third), Db (Perfect fifth), Fb (Minor seventh), Ab (Major ninth) and C (Augmented eleventh) notes, with Ab as the bass note.

Piano keyboard showing the notes for a Gb 9(#11)/Ab chord

How to play the Gb 9(#11)/Ab chord

Play Ab as the lowest bass note in the left hand
Find Gb (Root) on the piano keyboard
Add Bb (Major third) — 4 semitones above Gb
Add Db (Perfect fifth) — 7 semitones above Gb
Add Fb (Minor seventh) — 10 semitones above Gb
Add Ab (Major ninth) — 14 semitones above Gb
Add C (Augmented eleventh) — 18 semitones above Gb
Press all 7 notes simultaneously to sound the Gb 9(#11)/Ab chord

Related chords with different root

Gb 9(#11)

Related slash chords

Gb 7(#11)/Ab