I just realised that there are many occasions where I cannot set the album artist to "various"(or whatever) since with classical CDs I use the Album artist field for the name of the orchestra and the artist field for the soloist. I am forced to solve it like this by yet another software programme (Sonos) because if I don't I will get such entries under Artists as Arturo Michaelangeli//Berliner Symphoniker, Arturo Michaelangeli//London Symphony, etc.
There is a tag available for "soloists". Available tags also under "Composer" and "Conductor". So you could put that there.
What I have done for my classical works is put the composer as the album artist (ie. Beethoven, Mozart, Benjamin Britton, etc.). Then use the orchestra as the artist. When it is a variety of composers played by a single orchestra I use the orchestra for album artist as well as the artist. If it is a compilation of differing orchestras and/or composers I make the album artist "Classical Artists" which still keeps them separate.
You can then add the necessary fields (conductor, composer, soloists) to your view. You can add an expression to divide soloists when more than one plays with the use of the semi-colon.
You can shorten your information transfer with the Tools>Library Tools>Move / Copy Fields tool.
It's not perfect, but I can quickly find what I need in this manner. I never use "multiple artists" or "various artists" because it creates too huge of a mish-mash when browsing. I always use something that goes with the album theme if there isn't a true artist.
For instance I have an album titled; "The R&B No. 1's of the 50's". I made the album artist; "50's R&B Artists". Easy to see and delineates what the album is for a quick browse.