In Navidrome:
In Symfonium:
Log:
https://www.dropbox.com/s/hjcy0mygz6n7xmx/debug-20221203_085239.zip?dl=0
It’s already documented 
Navidrome does not yet expose the data. They have added that but not yet published a new version.
Symfonium already support their next version when it will be out.
Ok nice, thanks for the answer 