Simplify the following text for a Grade 9 native English-speaking person.
Original: For orchestration of piano music , some theorists recommend transposing the music to F major or G major . If F-sharp major must absolutely be used , one should take care that B-flat wind instruments be notated in A-flat major , rather than G-sharp major .
Simplified: If F-sharp major needs to be used , transposing instruments in B flat should have their music written in A-flat major , not G-sharp major .