I have found that classical music often comes with more than one composer's music on a disc. I have a disc with music from Ravel, Debussy and Mussorgsky.
The artist and composer tags are simple, but all of this disrelated music is held together by the ungainly album name of "Bolero/La Mer/Pictures at an Exhibition". I split the disc into 3 albums, each related only to the composer in question. This makes it a lot easier to organise and find.
I also split a disc with two sequences of music from the same composer, Elgar. I've now got 2 albums: "Enigma Variations" and "Pomp and Circumstance Marches". I've also set the Grouping tag, but I still like them separate.