Dynamic browsing with "is not" condition

[yaslam]

MinimServer's dynamic browsing is very useful and great.

I do this kind of browsing.
Genre: Classical > Instrument: violin > Composer: Beethoven

With this browsing, I can extract Beethoven's violin Albums or Tracks.
I like Beethoven very much, so most of the classical music in my library is Beethoven. However, I sometimes get tired of it when I listen to Beethoven all the time.
In such cases, I would like to extract music by composers other than Beethoven from my library.

For example, I may need to browse as follows
Genre: Classical > instrument: violin > Composer: "is not" Beethoven

Is dynamic browsing with such a negative condition - is not [xxx], exclude [xxx] - possible with MinimServer?
If there is no such feature, is it possible to implement it?