Hierarchical indexing of tags with multiple values?

[Alandbush]

(23-11-2020 15:24)simoncn Wrote:  The best way to achieve this would be to tag your genres as GENRE and your subgenres as SUBGENRE. To avoid the need to retag your files, you could use tagUpdate to make this change.

Like this?

@GENRE=Classical; Chamber
=GENRE=Classical
+SUBGENRE=Chamber

and repeat for remaining genres.