key signature
G minor
G1A2B♭3C4D5E♭6F7
2 flats, written B♭ E♭
The chords that live in it
Gmdegree 1 · minorAdimdegree 2 · diminishedB♭degree 3 · majorCmdegree 4 · minorDmdegree 5 · minorE♭degree 6 · majorFdegree 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
G minor has 2 flats.
They are written in this order, always: B♭ E♭.
Its notes are G, A, B♭, C, D, E♭ and F.
Relative: B♭ major has the same 2 flats. Parallel: G major has 1 sharp, 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 minorD minorA minorE minorB minorF♯ minorC♯ minorG♯ minorD♯ minorA♯ minor