I've only just started organizing my library, but I really have a lot of songs on discs, as well as on CDs. These are mainly maxi singles from the 80s, followed by the 90s.
I edit basic tags (artist, title, album, BPM...) in Tag&Rename (payable), because it perfectly finds everything on Discogs. In MB, I also add the genre, songwriters and the country from which the artist comes.
Most genres: disco, italo disco, eurodisco, synthpop, hi nrg.
Tracks (for now): 650
Albums (for now): 632
Size (for now): 9 GB - all mp3 320kbps
But the base will continue to grow enormously. I also fix the audio with adobe audition, so it goes more slowly. A lot of manual work, some automatic, but the program MB is really great for a music library. You just have to get to know him.