How do you play the F 7(b9)(#9)/Ab chord?

To play the F 7(b9)(#9)/Ab chord on piano, play the F 7(b9)(#9) chord (F, A, C, Eb, Gb and G#) 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 F 7(b9)(#9)/Ab chord means a F 7(b9)(#9) chord with Ab in the bass.

F 7(b9)(#9)/Ab

Q: What notes are in the F 7(b9)(#9)/Ab chord?

The F 7(b9)(#9)/Ab chord uses the 6 notes of the F 7(b9)(#9) chord — F (Perfect unison), A (Major third), C (Perfect fifth), Eb (Minor seventh), Gb (Minor ninth) and G# (Minor tenth) — with Ab played as the bass note in the lowest register.

The F 7(b9)(#9) chord consists of the F (Perfect unison), A (Major third), C (Perfect fifth), Eb (Minor seventh), Gb (Minor ninth) and G# (Minor tenth) notes, with Ab as the bass note.

Piano keyboard showing the notes for a F 7(b9)(#9)/Ab chord

How to play the F 7(b9)(#9)/Ab chord

Play Ab as the lowest bass note in the left hand
Find F (Root) on the piano keyboard
Add A (Major third) — 4 semitones above F
Add C (Perfect fifth) — 7 semitones above F
Add Eb (Minor seventh) — 10 semitones above F
Add Gb (Minor ninth) — 13 semitones above F
Add G# (Minor tenth) — 15 semitones above F
Press all 7 notes simultaneously to sound the F 7(b9)(#9)/Ab chord

Related chords with different root

F 7(b9)(#9)

Related slash chords

F 7(b9)/Ab