/usr/share/xfig/Libraries/Music/chant/ is in xfig-libs 1:3.2.6a-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/xfig/Libraries/Music/chant/cephalicus.fig
/usr/share/xfig/Libraries/Music/chant/climacus.fig
/usr/share/xfig/Libraries/Music/chant/clivis.fig
/usr/share/xfig/Libraries/Music/chant/clivisDot.fig
/usr/share/xfig/Libraries/Music/chant/custos.fig
/usr/share/xfig/Libraries/Music/chant/doclef.fig
/usr/share/xfig/Libraries/Music/chant/epiphonus.fig
/usr/share/xfig/Libraries/Music/chant/faclef.fig
/usr/share/xfig/Libraries/Music/chant/flat.fig
/usr/share/xfig/Libraries/Music/chant/measure.fig
/usr/share/xfig/Libraries/Music/chant/natural.fig
/usr/share/xfig/Libraries/Music/chant/podatus.fig
/usr/share/xfig/Libraries/Music/chant/porrectus.fig
/usr/share/xfig/Libraries/Music/chant/punctum.fig
/usr/share/xfig/Libraries/Music/chant/punctumDot.fig
/usr/share/xfig/Libraries/Music/chant/quilisma.fig
/usr/share/xfig/Libraries/Music/chant/torculus.fig
/usr/share/xfig/Libraries/Music/chant/virga.fig