Comment by CharlesW

> So that's bandcamp->musicbrainz, and then picard can get it from musicbrainz as usual?

Exactly, using Harmony for the Bandcamp→MusicBrainz bit. You just paste the MusicBrainz URL into Picard's search box (upper right-corner of window) immediately after you've submitted.

> …I guess the point is to have someone in the loop to sanity check things?

I'm honestly not sure what the rationale might be for having a human editor in the loop for sources like Bandcamp, Apple Music, Spotify, etc.