I started trying to tag and manage my music collection (which is on S3-compatible storage and mounted to my Linux server) using Beets CLI.
https://beets.readthedocs.io/en/latest/
It works ok but visually it can be kind of confusing for me to see exactly what each album/track is being tagged with. So instead, I've mounted the S3 storage to my Fedora Linux desktop and I'm using Musicbrainz Picard to manage tags and cover art. It's a much better experience.