My acquaintances who have/had 1 million or more LPs do/did not have not categorized at all or very well. What a mish mosh as they generally didn't listen but only collect records.
My friend with 250,000 78s used index cards and had easy shelving alphabetically by opera, vocalist, instrumentalist and conductor and LPs, all classical or jazz, similarly.
My friend with 250,000 78s used index cards and had easy shelving alphabetically by opera, vocalist, instrumentalist and conductor and LPs, all classical or jazz, similarly.