How to change your music files’ metadata information using iTunes for Mac

With all the features Apple has crammed into iTunes for macOS, it's a Swiss Army knife of an app (or maybe more like a 20 pounds of potatoes in a five-pound bag). But despite all of its the non-audio parts, iTunes can help you with music files. Notably, you can correct or modify metadata—information about the files—in bulk.But beware! These changes are made to the files, not just within iTunes, and there’s no warning and there’s no undo.My strong suggestions before you make bulk metadata changes in iTunes:
If you have iCloud Music Library enabled (via iTunes Match or Apple Music), make sure all the files you want to modify have been downloaded to your Mac and aren’t stored in the cloud. (See this September 2018 column on how to make sure your music is locally downloaded.)
Make a full backup of your iTunes Media folder. You can make sure you’re backing up the right folder by looking in iTunes > Preferences > Advanced, where the iTunes Media Folder Location is listed.

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iTunes lets you change metadata on multiple songs at once.To read this article in full, please click here