C# Double Harmonic Scale

C# – D – E# – F# – G# – A – B# – C#

Formula:H-A2-H-W-H-A2-H

Intervals:P1-m2-M3-P4-P5-m6-M7

C# Double Harmonic Scale Notes

Degree	Name	Note	Interval
1	Tonic	C#4	P1
2	Supertonic	D4	m2
3	Mediant	E#4	M3
4	Subdominant	F#4	P4
5	Dominant	G#4	P5
6	Submediant	A4	m6
7	Leading Tone	B#5	M7
8	Octave	C#5	—

The key of C# Double Harmonic Scale has 7 sharps: F♯, C♯, G♯, D♯, A♯, E♯, B♯.

F♯C♯G♯D♯A♯E♯B♯

These are the diatonic triads built on each degree of the C# Double Harmonic Scale:

Degree	Numeral	Chord	Quality
1	I	C# Major	Major
2	ii	D# Minor	Minor
3	iii	F Minor	Minor
4	IV	F# Major	Major
5	V	G# Major	Major
6	vi	A# Minor	Minor
7	vii°	C Diminished	Diminished