Trying to install on Ubuntu 18.04 LTS and got error messages on the third command in your instructions
(musicEnv) iotahub@u18:~$ sudo apt-get install musescore
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
musescore : Depends: libportaudio2 (>= 19+svn20101113) but it is not installable
Depends: libportmidi0 but it is not installable
Depends: libqt5help5 (>= 5.6.0~beta) but it is not installable
Depends: libqt5qml5 (>= 5.0.2) but it is not installable
Depends: libqt5quick5 (>= 5.6.1) but it is not installable
Depends: libqt5xmlpatterns5 (>= 5.0.2) but it is not installable
Depends: qml-module-qtquick-controls but it is not installable
Depends: qml-module-qtquick-dialogs but it is not installable
Depends: qml-module-qtquick-layouts but it is not installable
Depends: qml-module-qtquick2 but it is not installable
E: Unable to correct problems, you have held broken packages.
Comments
AppImage?
https://musescore.org/en/download/musescore-x86_64.AppImage
Indeed, the AppImage is always the recommended method on Linux systems, as it nicely sidesteps all these sort of issues that can occur when trying to use versions built by third parties that also rely on other packages etc. The AppImage is self-contained and should work on all Linux systems.
Thanks very much. Per both comments, I found this helpful video
https://musescore.org/en/node/104931
I also realized my original Ubuntu 18.04 had the minimum configuration. So I reinstalled with the typical config. I am able to import my midi files plus type in a tune. So cool. Thanks very much.