The G-major scale has only one sharp (which is F#)
G major, D major, E major, B major, F sharp major, F sharp minor, A sharp major, etc.
That would be C-sharp major. Every note is sharp.
Major first. (+1)
C major (no sharps or flats)Sharp Keys:G Major/E minor (1 sharp)D Major/B minor (2 sharps)A Major/F-sharp minor (3 sharps)E Major/C-sharp minor (4 sharps)B Major/G-sharp minor (5 sharps)F-sharp Major/D-sharp minor (6 sharps)C-sharp Major/A-sharp minor (7 sharps)Flat Keys:F Major/D minor (1 flat)B-flat Major/G minor (2 flats)E-flat Major/C minor (3 flats)A-flat Major/F minor (4 flats)D-flat Major/B-flat minor (5 flats)G-flat Major/E-flat minor (6 flats)C-flat Major/A-flat minor (7 flats)These are all the possible keys you can write in, enharmonic keys are italicised.
Four key signatures have G sharp and E sharp in them: F sharp Major, D sharp minor, C sharp Major and A sharp minor.
The key of Gmajor has 1 sharp which is F sharp.
The key of G Major has one sharp: F#
G major, D major, E major, B major, F sharp major, F sharp minor, A sharp major, etc.
G Major has just 1 sharp and it is F#
That would be C-sharp major. Every note is sharp.
Major first. (+1)
what is the relative minor of f sharp major
Four key signatures have G sharp and E sharp in them: F sharp Major, D sharp minor, C sharp Major and A sharp minor.
C major (no sharps or flats)Sharp Keys:G Major/E minor (1 sharp)D Major/B minor (2 sharps)A Major/F-sharp minor (3 sharps)E Major/C-sharp minor (4 sharps)B Major/G-sharp minor (5 sharps)F-sharp Major/D-sharp minor (6 sharps)C-sharp Major/A-sharp minor (7 sharps)Flat Keys:F Major/D minor (1 flat)B-flat Major/G minor (2 flats)E-flat Major/C minor (3 flats)A-flat Major/F minor (4 flats)D-flat Major/B-flat minor (5 flats)G-flat Major/E-flat minor (6 flats)C-flat Major/A-flat minor (7 flats)These are all the possible keys you can write in, enharmonic keys are italicised.
No key signatures contain only those three sharps. With the A-sharp, it could be the keys of B major, F-sharp major, or C-sharp major (or any of their relative minor keys).
A major has three sharps: F, C, and G.F sharp, C sharp, G sharp
The key with three sharps is A major, however A major uses C sharp - alongside with G sharp and F sharp - instead of D sharp.