I'm a CD junkie. I spend every free moment going through CD mail-order catalogs and every extra dollar feeding my habit. I love CDs. Not Record More Than One Composer Per Disc.
CDs are so small, they can serve as their own ready-made catalog cards.
I like to file my classical discs in alphabetical order by composer and my popular discs by performer. That way I can retrieve them easily. The larger the collection, the more important this becomes. When CD makers mix two or more composers on a single disc, I have a problem deciding where to place it on my shelf, and often forget where I put it. Thou Shalt Charge for CDs by the Length of the Recordings.