Three main groups. Classical, Jazz, Rock.
Alpha by name of Artist/composer.
Foor Classical after by Composer, arranged by size of group, Sonata, Duo, Trio etc. Withing each, Say Beethoven Fifth Symphony then by conductor.
For Jazz and Rock, after each primary artist or band name, in chronological order. (Which really helps but is hard to keep straight for many groups, but worth trying to do. It would be great for Classical too, but is way too complicated to keep straight, so i go with the other method in Classical.)
Actually a totally chronological order only, would be amazing. And informative. But total Hell to keep stright. And to find stuff unless you had a good handle on the dates etc.