piano scale
F♯ melodic minor
F♯1G♯2A♭3B4C♯5D♯6E♯7
Minor third, major sixth and seventh — the ascending form, and the parent of most of the altered sounds below.
The same sounds spelled from the other side are G♭ melodic minor.
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♯HAWBWC♯WD♯WE♯HF♯
What is true of it
F♯ melodic minor is F♯, G♯, A, B, C♯, D♯ and E♯, and back to F♯.
Its steps are W – H – W – W – W – W – 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♯augaugmentedC♯7dominant seventhD♯dimdiminishedD♯m7♭5half-diminished seventhF♯mminorG♯mminorG♯m7minor seventh
Found by testing every chord in the catalogue against these 7 sounds, not chosen.
Other scales on F♯
C mel minC♯ mel minD♭ mel minD mel minD♯ mel minE♭ mel minE mel minF mel minall 374