How do you play the Gb 7(#9)(no5)/Ab chord?

To play the Gb 7(#9)(no5)/Ab chord on piano, play the Gb 7(#9)(no5) chord (Gb, Bb, Fb and A) 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 7(#9)(no5)/Ab chord means a Gb 7(#9)(no5) chord with Ab in the bass.

Gb 7(#9)(no5)/Ab

Q: What notes are in the Gb 7(#9)(no5)/Ab chord?

The Gb 7(#9)(no5)/Ab chord uses the 4 notes of the Gb 7(#9)(no5) chord — Gb (Perfect unison), Bb (Major third), Fb (Minor seventh) and A (Minor tenth) — with Ab played as the bass note in the lowest register.

The Gb 7(#9)(no5) chord consists of the Gb (Perfect unison), Bb (Major third), Fb (Minor seventh) and A (Minor tenth) notes, with Ab as the bass note.

Piano keyboard showing the notes for a Gb 7(#9)(no5)/Ab chord

How to play the Gb 7(#9)(no5)/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 Fb (Minor seventh) — 10 semitones above Gb
Add A (Minor tenth) — 15 semitones above Gb
Press all 5 notes simultaneously to sound the Gb 7(#9)(no5)/Ab chord