flatpakcommand at the end of this step.
In order to install Google Play Music with GNOME Software, launch GNOME Software, which is called just Software, search for Google Play Music and finally click the Install button.
Alternatively, launch a Linux terminal emulator and type the command below and press the Enter key to install the package.
flatpak install nuvola eu.tiliado.NuvolaAppGooglePlayMusic
Alternatively, you can launch Google Play Music from a terminal:
flatpak run eu.tiliado.NuvolaAppGooglePlayMusic