Db 13
The Db 13 chord consists of the Db (Perfect unison), F (Major third), Ab (Perfect fifth), Cb (Minor seventh), Eb (Major ninth) and Bb (Major thirteenth) notes.

How to play the Db 13 chord
- Find Db (Root) on the piano keyboard
- Add F (Major third) — 4 semitones above Db
- Add Ab (Perfect fifth) — 7 semitones above Db
- Add Cb (Minor seventh) — 10 semitones above Db
- Add Eb (Major ninth) — 14 semitones above Db
- Add Bb (Major thirteenth) — 21 semitones above Db
- Press all 6 notes simultaneously to sound the Db 13 chord