MusicBrainz Picard

It’s a GUI tool that gives you the ability to tag songs in bulk. It uses the MusicBrainz database to provide relevant metadata, and also provides user plugins (like the Last.fm plugin I mentioned)

I get my songs in batches (through Bandcamp and youtube-dlp) every couple of months, so GUI is fine for me.

However, I’m seeing a CLI alternative called beets.io ? Apparently it is a CLI tool that also queries the MusicBrainz database (or Beatport, or Discogs), and apparently integrates well with Lidarr. I never tried it, however.