piano scale
C Phrygian dominant
C1D♭♭2E3F4G5A♭♭6B♭♭7
The fifth mode of harmonic minor: a flat second over a major third, so the step from the second to the third is a step and a half.
Written out
Every accidental is written in, rather than left to a key signature, so the letters can be read one at a time.
The step pattern
CHD♭W+HEHFWGHA♭WB♭WC
What is true of it
C Phrygian dominant is C, D♭, E, F, G, A♭ and B♭, and back to C.
Its steps are H – W+H – H – W – H – W – W, where W is a whole step and H a half.
On the same tonic, C Phrygian differs from it by exactly one note.
Chords made only of these notes
CmajorCaugaugmentedC7dominant seventhD♭majorD♭mminorD♭dimdiminishedD♭maj7major seventhEdimdiminished
Found by testing every chord in the catalogue against these 7 sounds, not chosen.
Other scales on C
C Lydian dominantexoticC alteredexoticC double harmonicexoticC majormajorC natural minorminorC harmonic minorminor
C♯ phr domD♭ phr domD phr domD♯ phr domE♭ phr domE phr domF phr domF♯ phr domall 374