|Relative key||B major
enharmonic: C♭ major
|Parallel key||G♯ major
enharmonic: A♭ major
|G♯, A♯, B, C♯, D♯, E, F♯, G♯|
Its key signature has five sharps.
Changes needed for the melodic and harmonic versions of the scale are written in with accidentals as necessary.
Despite the key rarely being used in orchestral music other than to modulate, it is not entirely uncommon in keyboard music, as in the sonatas of Scriabin. For orchestration of piano music, some theorists recommend transposing the music to G minor or A minor. If G-sharp minor must absolutely be used, one should take care that B-flat wind instruments be notated in B-flat minor, rather than A-sharp minor.
In a few scores, 5-sharp key signatures in the bass clef are written with the sharp for the A on the top line.
Scales and keys 
|Diatonic scales and keys|
|The table indicates the number of sharps or flats in each scale. Minor scales are written in lower case.|
- A. Morris, "Symphonies, Numbers and Keys" in Bob's Poetry Magazine, III.3, 2006.
- "Paloma Faith: New York Sheet Music". sheetmusicdirect.com. Retrieved 8 May 2013.