What’s up @djveleno,
Sorry to hear of your problem. I have not had a problem like this with my Prime 4. For safety reason, I always recommend having a full backup of your music library on another SSD, USB, etc. I say this because I nearly lost my library due to theft some years ago. Luckily at the time I had a partial backup. It is now my practice to periodically clone my main drive on a back up drive ssd that I store separately in my home.
Good luck!