Accidentally deleted the "Artist" tag for whole library

Hey All,

A few days ago I was updating the info for some of my music and had accidentally selected all and made them the same "Artist" I didn't see a way to undo my mistake so I selected all and cleared the "Artist" tag from Get Info section under details (the "Album Artist" tag still remains as it was originally). Now 99% of my music is from Apple Music, so it should have correct tags, is there a way I can restore everything to how it was?