Preferred sharps or flats should have partial application

• May 31, 2020 - 01:03
Reported version
S5 - Suggestion

In orchestral scores, sometimes transposed instruments may use a different key from default settings. Musescore 3.5 now can do this by changing preferred sharps or flats in the staff/part properties. However, it seems to be a global application. In the example attached, I want clarinets to display flat keys at bar 5, but keep sharp keys at bar 3. However, when I change the property at clarinet 1, bar 3 also becomes flat key. Is it possible to implement something to apply the change from the current point to the end instead of the whole music of this staff? I don't want to create extra clarinet staves to apply these changes, especially when the keys are in one system, which is impossible to merge halves of two different staves into a whole.


Attachment Size
keys.mscz 17.59 KB


So it should be implemented. The current solution is to mark the point with a text like "key to xx", then uncompress e file and search the text, manually change the key signature, not a comfortable operation. A person is now inputting a R. Strauss work for me, and he meets this problem. I have to ask for the incomplete file and do manual changes then return to him.


Actually, since this is a "part" as opposed to "staff" property, you can change it mid-score by adding an instrument change anywhere between the two key signatures. Then you can change this property independently for the two sections of the score.

Mark's suggestion can be a good solution, thanks! But I think Musescore can be more convenient. Sibelius also has problems of using a different key, so I think Musescore should have its advantage of choosing enharmonic keys, by pressing a key on individual key signature to change enharmonic key globally, and another key to change individually.

FWIW, when the feature was first being discussed, it was also suggested to be able to specify a maximum number of flats or sharps, so you could say you would wanted it to switch to flats only if there were more than 6 sharps, etc. But that was deemed unnecessarily complex. Someday maybe that control could still be added. Or overrides for particular key signatures.

The possible enharmonic keys are: 5# vs 7b, 6# vs 6b, and 7# vs 5b. Just these 3 pairs, because no key signature has more than 7 accidentals. So preferred sharps and flats can be replaced by property on individual key signatures with 5-7 accidentals.