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

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