/usr/share/app-install/desktop/frescobaldi:frescobaldi.desktop is in app-install-data 14.04.0.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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X-AppInstall-Package=frescobaldi
X-AppInstall-Popcon=58
X-AppInstall-Section=universe
Name=Frescobaldi
GenericName=Frescobaldi
Comment=LilyPond Music Editor
MimeType=text/x-lilypond;
Exec=frescobaldi %F
X-KDE-StartupNotify=true
Icon=frescobaldi
Type=Application
Terminal=false
InitialPreference=8
Categories=Qt;AudioVideo;Music;Utility;TextEditor;
X-Ubuntu-Gettext-Domain=app-install-data
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