Ab double harmonic scale
The Ab double harmonic scale consists of the Ab (Perfect unison), Bbb (Minor second), C (Major third), Db (Perfect fourth), Eb (Perfect fifth), Fb (Minor sixth) and G (Major seventh) notes.

How to play the Ab double harmonic scale
- Find Ab (Root) on the piano keyboard
- Play Bbb (Minor second) — 1 semitone above Ab
- Play C (Major third) — 4 semitones above Ab
- Play Db (Perfect fourth) — 5 semitones above Ab
- Play Eb (Perfect fifth) — 7 semitones above Ab
- Play Fb (Minor sixth) — 8 semitones above Ab
- Play G (Major seventh) — 11 semitones above Ab
- Play all 7 notes in ascending order to perform the Ab double harmonic scale