It would be nice in Music if you could filter the list based on Category type that (I think) is usually embedded in the audio files (or could be retrieved from the various music meta services). So, for example, your Music page would come up and you could pick Blues, Classical, Rock, etc., from the dropdown and then the page would refresh with whatever content matches that category.
There are already filters which do exactly that.
https://support.plex.tv/hc/en-us/articles/200392126-Using-the-Library-View
Depending on whether you choose view mode
Artists, Albums or Tracks
the results can vary.
Early 2021 clean-up: implemented