How do you play the G dim/Ab chord?

To play the G dim/Ab chord on piano, play the G dim chord (G, Bb and Db) 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 G dim/Ab chord means a G dim chord with Ab in the bass.

G dim/Ab

Q: What notes are in the G dim/Ab chord?

The G dim/Ab chord uses the 3 notes of the G dim chord — G (Perfect unison), Bb (Minor third) and Db (Diminished fifth) — with Ab played as the bass note in the lowest register.

The G dim chord consists of the G (Perfect unison), Bb (Minor third) and Db (Diminished fifth) notes, with Ab as the bass note.

Piano keyboard showing the notes for a G dim/Ab chord

How to play the G dim/Ab chord

Play Ab as the lowest bass note in the left hand
Find G (Root) on the piano keyboard
Add Bb (Minor third) — 3 semitones above G
Add Db (Diminished fifth) — 6 semitones above G
Press all 4 notes simultaneously to sound the G dim/Ab chord