1° passo: aggiornamento "libsndfile" 1.1.0 -> 1.2.2 (file spec allegato)
2° passo: aggiornamento "harfbuzz" 7.0.1 -> 10.0.1 (file spec allegato)
3° passo: primo tentativo aggiornamento MuseScore 4.4.3. Aggiornamento fallito

https://musescore.org/en/node/370226
Al momento ancora non conosco il motivo, ma poiché è in sviluppo la versione 4.5.0 (https://github.com/musescore/MuseScore/ ... cb7b0f21a0) suggerirei di attendere quella prima di riprovare con le Qt6.

Dopo il fallito tentativo "MuseScore 4.4.3 - Qt6" ho ripiegato su "MuseScore 4.3.2 - Qt5" che funziona bene, ad esempio seguendo questi tutorial.

https://rutube.ru/video/6f02152c8b7f137 ... bbe5d0b54/
https://rutube.ru/video/25bb7be2410dc52 ... 5afdaf4a5/
...
e così via. In allegato un semplice file test di prova "SimpleTest_mu4.mscz".
Verificate/testate/correggete eventuali errori e aggiornate il repositorio.
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Hi,
I tried to upgrade MuseScore (very big) sw to 4.4.3 version using Qt6 (since 4.4.x I thing it's possibile to use only Qt6) but needed update of some dependencies:
1° step: update "libsndfile" 1.1.0 -> 1.2.2 (enclosed spec file)
2° step: update "harfbuzz" 7.0.1 -> 10.0.1 (enclosed spec file)
3° step: 1st attempt to update to 4.4.3 version ...failed

https://musescore.org/en/node/370226
For now I don't know why. Now version 4.5.0 (https://github.com/musescore/MuseScore/ ... cb7b0f21a0) is under development. I would suggest waiting for that before trying again with Qt6.
After the failed attempt "MuseScore 4.4.3 - Qt6" I fell back to "MuseScore 4.3.2-Qt5" which works very well, e.g. with these tutorials:
https://rutube.ru/video/6f02152c8b7f137 ... bbe5d0b54/
https://rutube.ru/video/25bb7be2410dc52 ... 5afdaf4a5/
...
and so on. Enclosed a simple file test "SimpleTest_mu4.mscz".
Checking/correcting/testing any errors and add the change to the repository.