couresy accidental disappears after transposition - OS: Windows 10 (10.0), Arch.: x86_64, MuseScore version (64-bit):, revision: github-musescore-musescore-06a66a2

• Jan 27, 2019 - 09:05

I have just written down a trombone part to transpose it an octave lower for tuba. I noticed that any couresy accidental disappeard with the transposition. I recognize that the original accidental does not count for a different octave. But I expected that the transposition also worked on the accidental. The disappearance of the accidental does not depend on wether parenthesis are beeing added or not. Is it a feature that I do not understand yet or coud it be something nobody thought about until now?

I have added a screen snippet before and after transposition.

Attachment Size
courtAcc0.JPG 11.75 KB
courtAcc1.JPG 12.92 KB


This is a feature I'm not really fond of.

The logic behind it is that when you move a note down an octave, it may or may not be logical to keep the courtesy accidental. In practice, in printed scores I've seen, the publishers go courtesy accidental crazy and will put courtesy accidentals if the same instrument played a modified note in any octave.

There is also the consideration that courtesy accidentals change drastically when you transpose by anything but octaves. If octave transpositions have not been treated special, then it would make sense to eliminate courtesy accidentals here as well.

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