F♯ major
 |
|
| Relative key | D♯ minor |
|---|---|
| Parallel key | F♯ minor |
| Dominant key | C♯ major |
| Subdominant | B major |
| Enharmonic | G♭ major |
| Component pitches | |
| F♯, G♯, A♯, B, C♯, D♯, E♯ | |
F♯ major or F-sharp major is a major scale based on F♯, consisting of the pitches F♯, G♯, A♯, B, C♯, D♯, and E♯. Its key signature has six sharps.
Its relative minor is D♯ minor (or enharmonically E♭ minor). Its parallel minor is F♯ minor. Its enharmonic equivalent is G♭ major. In writing music for transposing instruments in B-flat or E-flat, it is preferable to use a G-flat rather than an F-sharp key signature. If F-sharp major must absolutely be used, one should take care that B-flat wind instruments be notated in A-flat major, rather than G-sharp major (or G instruments used instead, giving a transposed key of B major), and D-flat instruments in F major instead of E-sharp major, in order to avoid double sharps in key signatures.
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Wikipedia