key signature
A♯ minor
A♯1B♯2C♯3D♯4E♯5F♯6G♯7
7 sharps, written F♯ C♯ G♯ D♯ A♯ E♯ B♯
The chords that live in it
A♯mdegree 1 · minorB♯dimdegree 2 · diminishedC♯degree 3 · majorD♯mdegree 4 · minorE♯mdegree 5 · minorF♯degree 6 · majorG♯degree 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
A♯ minor has 7 sharps.
They are written in this order, always: F♯ C♯ G♯ D♯ A♯ E♯ B♯.
Its notes are A♯, B♯, C♯, D♯, E♯, F♯ and G♯.
Relative: C♯ major has the same 7 sharps. Parallel: A♯ major has 10 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 minorF♯ minorC♯ minorG♯ minorD♯ minor