G-sharp minor
G-sharp minor is usually not used in orchestral music except to modulate, but it is more common in keyboard music, like Scriabin's sonatas. For orchestration of piano music (writing it so an orchestra can play it), sometimes the music is transposed to G minor or A minor. If G-sharp minor must be used, B-flat wind instruments should have their part written in B-flat minor, not A-sharp minor.