I've managed to get rid of the segfault and start gnome-music by setting

       #:configure-flags '("-Denable-lua-factory=no" "-Denable-dleyna=no")

in grilo-plugins.
Looks like dleyna is segfaulting for us.

Now gnome-music show a window with a logo and the text

"Hey Dj
The contents of your Music folder will appear here."

then nothing happens.  I've never used GNOME Music before so I'm not
sure what to expect.

-- 
Pierre Neidhardt
https://ambrevar.xyz/