To bump the conversation here and in related Improve genres filter (where @danny says something about quotes that I don’t understand), I’d love to see a text input search filter field in the Genre focus filter, similar to the one in Labels, for instance (see screenshot, top right). That would enable us to focus on, for instance, all genres with the term ‘Brazil’ in them, i.e. ‘Brazil Samba’ AND ‘Brazil Bossa’. That is now only possible, if I’m not mistaken, by clicking on every single genre we want included. If I’d like to listen to all my ‘World’ genre, for example, that would involve a lot of clicking. Thanks for considering.
(The truth is out there but not necessarily here)
There is a workaround and it takes preparation: when you click a second time on a tag or genre tag, the logic goes to “and not.” It’s the only way right now you can include “and” in boolean logic among tags.
This in fact illustrates one reason not to include full Boolean logic: the rules are difficult to understand. If you were able to search for “Brazil Samba” AND “Brazil Bossa” the answer would be NONE because you are asking for albums that are tagged with both Genres simultaneously (ok, it might happen, but it is not what you want). In this case, what you should do is OR, which is in fact what Roon does with Genres.
There is another issue here, which is that clicking on all the Genres with Brazil in them is cumbersome. My solution for such situations (e.g. all the various spellings of the ECM label) is to go through and do it manually, then when you have that view set up right, define a bookmark for Brazil or ECM.