piano scale
G♯ melodic minor
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 A♭ 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
What is true of it
G♯ melodic minor is G♯, A♯, B, C♯, D♯, E♯ and F𝄪, and back to G♯.
Its steps are W – H – W – W – W – W – H, where W is a whole step and H a half.
Written correctly it needs 7 alterations, F𝄪 among them. That is what the letters force, and it is also why nobody writes music in this key: the same notes spelled from the other side are easier to read.
On the same tonic, G♯ major differs from it by exactly one note.
Chords made only of these notes
Found by testing every chord in the catalogue against these 7 sounds, not chosen.
Other scales on G♯
C mel minC♯ mel minD♭ mel minD mel minD♯ mel minE♭ mel minE mel minF mel minall 374