I'm "trying" to compose a piece for my Music class (it's an assignment) but I can't figure out what key signature to put in. I've got a B-flat, E-flat and C-sharp as regulars in my piece. As of now, my manuscript has a G-minor key signature and has C-sharp accidentals. I know the modern G-minor scale has the accidentals that I've got, but the G-minor key signature doesn't have a C-sharp in it.
How do you think I should write my key signature?