key signature
F♯ minor
F♯1G♯2A3B4C♯5D6E7
3 sharps, written F♯ C♯ G♯
The chords that live in it
F♯mdegree 1 · minorG♯dimdegree 2 · diminishedAdegree 3 · majorBmdegree 4 · minorC♯mdegree 5 · minorDdegree 6 · majorEdegree 7 · major
Built by stacking thirds inside the scale and asking what quality comes out, rather than from a table of roman numerals.
What is true of it
F♯ minor has 3 sharps.
They are written in this order, always: F♯ C♯ G♯.
Its notes are F♯, G♯, A, B, C♯, D and E.
Relative: A major has the same 3 sharps. Parallel: F♯ major has 6 sharps, which is why changing mode changes the signature by three.
Every key
C♭ majorG♭ majorD♭ majorA♭ majorE♭ majorB♭ majorF majorC majorG majorD majorA majorE majorB majorF♯ majorC♯ majorA♭ minorE♭ minorB♭ minorF minorC minorG minorD minorA minorE minorB minorC♯ minorG♯ minorD♯ minorA♯ minor