A add13
The A add13 chord consists of the A (Perfect unison), C# (Major third), E (Perfect fifth) and F# (Major thirteenth) notes.

How to play the A add13 chord
- Find A (Root) on the piano keyboard
- Add C# (Major third) — 4 semitones above A
- Add E (Perfect fifth) — 7 semitones above A
- Add F# (Major thirteenth) — 21 semitones above A
- Press all 4 notes simultaneously to sound the A add13 chord