To begin with, a key with many sharps/flats is not always convenient to read. It is often easier to read a scale with six flats than with six sharps. This is because it is more convenient to raise a note from a flat to a natural than from a sharp to a double sharp. Here the same situation arose:
Curved and straight soprano saxophonesI went through a bunch of videos; in one of them I found the approximate location of this button.
Curved and straight soprano saxophonesHowever, it still was not possible to change the key. Therefore, we will have to use a workaround.
