G double harmonic scale
The G double harmonic scale consists of the G (Perfect unison), Ab (Minor second), B (Major third), C (Perfect fourth), D (Perfect fifth), Eb (Minor sixth) and F# (Major seventh) notes.

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