piano scale
A Phrygian dominant
A1B♭♭2C♯3D4E5F♭6G♭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
AHB♭W+HC♯HDWEHFWGWA
What is true of it
A Phrygian dominant is A, B♭, C♯, D, E, F and G, and back to A.
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, A Phrygian differs from it by exactly one note.
Chords made only of these notes
C♯dimdiminishedC♯augaugmentedDmminorEdimdiminishedEm7♭5half-diminished seventhFaugaugmentedGmminorGdimdiminished
Found by testing every chord in the catalogue against these 7 sounds, not chosen.
Other scales on A
A Lydian dominantexoticA alteredexoticA double harmonicexoticA majormajorA natural minorminorA harmonic minorminor
C phr domC♯ phr domD♭ phr domD phr domD♯ phr domE♭ phr domE phr domF phr domall 374