musescore / musescore/MuseScore
Disable the display of the key signature when changing transposing instruments if score is in concert pitch
@miiizen is already working on this.
Since Aug 21, 2026.
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Description
Your idea
I suggest disabling the display of the key signature in the case when the user changes the instrument (transposing) to another, and when the score is shown in concert pitch.
Problem to be solved
It's one thing when the score is displayed in transposed form. Then displaying the key signature change is really useful (and necessary). But when the score is displayed notated in concert pitch, then why in this case display the same key signature that is specified by default in each system?
The situation looks especially ridiculous when a user changes, for example, an English horn to an Oboe. The oboe is not a transposing instrument. Why display a key signature before switching to this instrument?
Therefore, in order to avoid such confusing things, I suggest disabling any display of the key signature when changing any instrument, if the score is displayed in concert pitch.
Prior art
No response
Additional context
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Checklist
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