Gb sus2/Ab
The Gb sus2 chord consists of the Gb (Perfect unison), Ab (Major second) and Db (Perfect fifth) notes, with Ab as the bass note.

How to play the Gb sus2/Ab chord
- Play Ab as the lowest bass note in the left hand
- Find Gb (Root) on the piano keyboard
- Add Ab (Major second) — 2 semitones above Gb
- Add Db (Perfect fifth) — 7 semitones above Gb
- Press all 4 notes simultaneously to sound the Gb sus2/Ab chord