piano scale
F♯ harmonic major
F♯1G♯2A♯3B4C♯5D♭6E♯7
Major with a flattened sixth: the mirror of harmonic minor, and the reason a major key can borrow a minor subdominant.
The same sounds spelled from the other side are G♭ harmonic major.
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♯WG♯WA♯HBWC♯HDW+HE♯HF♯
What is true of it
F♯ harmonic major is F♯, G♯, A♯, B, C♯, D and E♯, and back to F♯.
Its steps are W – W – H – W – H – W+H – H, where W is a whole step and H a half.
On the same tonic, F♯ major differs from it by exactly one note.
Chords made only of these notes
C♯majorC♯7dominant seventhDdimdiminishedDaugaugmentedF♯majorF♯augaugmentedF♯maj7major seventhG♯dimdiminished
Found by testing every chord in the catalogue against these 7 sounds, not chosen.
Other scales on F♯
C harm majC♯ harm majD♭ harm majD harm majD♯ harm majE♭ harm majE harm majF harm majall 374