@spoutmouzert
I use Yate to edit metadata and add art. It's about $20 but worth it. Much art will be added when ripping, but Yate also does auto searches and/or manual searches according to your criteria.
The way I use Lumin app, AlbumArtist needs to be populated with my main key. It's fast and easy to edit via Yate. So all my Bach albums appear under Bach instead of be orchestra or soloist. My movie soundtracks all appear as one album titled the way I like it, by movie title not artist. Regardless of your preferences, Yate is great, easy Mac software to do your editing. Cheers,
Spencer