I've built an audio collection and from my experience you won't be happy with any sort of filtering/grouping of file names. I read that Dolphin can read metadata of the files, i.e. the ID3 tags, and group accordingly. I have not tried it, but (again) in my experience the ID3 tags of collected albums/tracks are too random to satisfy good hierarchical organisation.
What I usually do first thing on importing new music to the collection is run it through a music library manager that harmonises the ID3 tags according to official music library records. In doing so, it also brings the individual tracks and directory ordering into a uniform format (chosen by me. It is not, but it could be Album1.1.Songtitle.mp3, Album1.2.Songtitle.mp3) on import. AFTER doing this, you get adequate file grouping in a file manager, be it per ID3 tag or regular file listing.
So my advice to you is to get a music library software you enjoy using which supports updating the ID3 metadata. After you're done using it you'll see how much better it does everything else you try to do with the music (like creating playlists on the fly, etc).