[mixmastamyk]

My 80s CDs are fine. Just played my first CD, Bryan Adams and it sounds like the day I bought it. Maybe your environment or drive are factors?

https://en.wikipedia.org/wiki/Reckless_(Bryan_Adams_album)

[genewitch]

i think various pressing factories had different tolerances for oxygen ingress, which, iirc, the oxidization is what actually kills optical media.