Is that French? That's not what we learned in high school... Or is that a French autocorrect? LOL
On-topic: @xconomicron, the Xbox Music app doesn't "change" the metadata, I think it interprets it differently. If it would actually change it, the old music hub would not be able to present it normally either. But for "misreadings", I have zero issues with the Xbox music app. Have you tried mp3tag? Problem with most tag-editors is that they don't actually change the tag, like xbox music, even though it displays otherwise.