I can't edit song info on certain songs in my music library

I just bought a new macbook and started using apple music on it. All my music from my previous macbook transferred over. The problem is certain songs/albums wont let me edit them when I click "get info". There doesn't seem to be any rhyme or reason why some will let me and some won't. I checked the folder and I have read and write permissions. Any help? Thank you!