Library is the vinyl collection or when it comes to non-k-pop releases, as for kpop its cd's.
Rating system goes as follows:
100 - A reflection of my soul
90-99 - Peak, love it a shit ton.
80-89 - Great, fw it heavily.
70-79 - rlly good, like it a lot.
60-69 - good, i like it.
50-59 - its alright
40-49 - just meh
30-39 - bad, I do not like this at all.
20-29 - pretty fucking shit
10-19 - just rot idc
0-9 - A disgrace to mankind