Ciao from Italy Andrey.
I don't think you should change the way you are using.
It's the way suggested by CDDB and FreeDB for Downloading and Submitting.
I'm not using Orange CD but I assume you can use a filter on Genres / Sub-Genres so that you don't have punk and operas mixed up and you can list them in a proper way but ALWAYS as Various Artists...
From the Gracenote:5. Submitting edits or new entries to the database...
"Compilations (samplers, soundtracks, etc.). A compilation is an album with tracks by different artists, such as soundtracks or samplers. The Artist Name should almost always be Various Artists. (CDDB2 only): Please turn on the Compilation checkbox to fill in the artist and genre for each track.

Anthologies (greatest hits, etc.). An anthology is an album of tracks all by the same artist, but put together from several other albums or sources. Do not turn on the Compilation checkbox for an anthology

Hope this help & have a nice day.

The Hole Studio - Mario Del Buono