This script requires MUSICBRAINZ_ARTISTID or MUSICBRAINZ ARTIST ID tags present in your files. It cannot function without them.

musicbrainz releases

musicbrainz links

Releases mode displays all the release groups for the given artist. They are clickable so you can read more on MusicBrainz.

Links mode returns all the manually curated external links for the artist such as their home page/twitter/ databases etc.