piano scale
F♯ Phrygian dominant
F♯1G♭2A♯3B4C♯5D♭6E♭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.
The same sounds spelled from the other side are G♭ Phrygian dominant.
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
F♯HGW+HA♯HBWC♯HDWEWF♯
What is true of it
F♯ Phrygian dominant is F♯, G, A♯, B, C♯, D and E, and back to F♯.
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, F♯ Phrygian differs from it by exactly one note.
Chords made only of these notes
C♯dimdiminishedC♯m7♭5half-diminished seventhDaugaugmentedEmminorEdimdiminishedEm7minor seventhEm7♭5half-diminished seventhF♯major
Found by testing every chord in the catalogue against these 7 sounds, not chosen.
Other scales on F♯
F♯ Lydian dominantexoticF♯ alteredexoticF♯ double harmonicexoticF♯ majormajorF♯ natural minorminorF♯ harmonic minorminor
C phr domC♯ phr domD♭ phr domD phr domD♯ phr domE♭ phr domE phr domF phr domall 374