The C# phrygian dominant / Db phrygian dominant scale has 7 notes: C#, D, F, F#, G#, A and B. Its formula is 1 b2 3 4 5 b6 b7 and its steps, in tones, are ½ – 1½ – ½ – 1 – ½ – 1 – 1.
The phrygian dominant mode (the "flamenco scale") has an eastern color, with a minor second and a major third. Typical of flamenco and Middle Eastern music.
C# phrygian dominant
C# D F F# G# A B · 1 b2 3 4 5 b6 b7
Colored dots: notes of the scale, the root is the darkest.