G-sharp minor
Its relative minor is F minor. Its parallel minor, A-flat minor, is usually written instead as the enharmonic key of G-sharp minor, since A-flat minor contains seven flats and G-sharp minor only contains five sharps, making A-flat minor rarely usable. Its enharmonic, G-sharp major, with eight sharps, including the F, has a similar problem, and so A-flat major is often used as the parallel major for G-sharp minor. (The same enharmonic situation occurs with the keys of D-flat major and C-sharp minor.)