How can I effectively (and easily) get rid of unwanted subgenre tags?

[anon_mbrainz]

My solution using a Genre Mapper plugin script:

Genre Mapper plug-in scripts

After plenty of trial-and-error I’ll go first. If the musicbrainz genre lookup is limited to a single genre then Genre Mapper can be used to break up the main genre into multiple genres without duplicating list items (it would be more flexible if Genre Mapper did a final list dedupe, but it may or may not actually lead to better results). To speed up matching and to make everything tidy I tried to limit each mapping to a single line using regex grouping, thus ordering matters (granular rules are…