Is it possible to edit the "Description" tag in MP3TAG?

[Florian]

@MotleyG

Anything you see in Apple Music that cannot be displayed in mp3tag's extended tags window are proprietary from their store and cannot be changed. These are buried in the packaging.

Just for clarification: there is iTunes, which is now renamed to Music on macOS (I often refer to it as Music.app to emphasize the difference to, well, music), and there is Apple Music (the music streaming service from Apple). The OP was referring to Music.app.

@MotleyG

Local files should recognize the changed tags, but only if you run a refresh script or manually delete them from the library your library and add them back.

@Detlef, can you try refreshing the files as outlined here:

Music App and Covers

Yes, UpdateTagInfo mentioned by @MotleyG seems to be for Windows only. On the Mac, I'm using a very simple script which you can use with the Script Editor.app on macOS: tell application "Music" set sel to selection if sel is {} then return repeat with aTrack in sel if class of aTrack is file track then refresh aTrack end repeat end tell You can run it while having the tracks to be reloaded selected in Music.app. I think it was inspired by Doug's AppleScripts, but I can't find the corre…

If this doesn't work, I'd start from scratch with a new Music.app library (and keep the old one in a backup).