The classical is divided first among composers, meaning everything on the LP is by one composer.
Second, classicly by instrument, solo piano all by the same pianist, organ, oboe etc.
Third classical genre, orchestral or chamber or ballet when two or more composers
All vocals by name of group or individual
All opera singers by name
All opera by Composer's name
Soundtracks separate
Second, classicly by instrument, solo piano all by the same pianist, organ, oboe etc.
Third classical genre, orchestral or chamber or ballet when two or more composers
All vocals by name of group or individual
All opera singers by name
All opera by Composer's name
Soundtracks separate