Torrent scene is still alive and well. Actually has been revived pretty heavily since streaming services have gone to shit. MP3s are easy enough to just rip from youtube using yt-dlp. Supports more than just yt despite the name. That has all the info about it but you probably want to update to the nightly versions since they are more likely to be up to date.
I don’t know why but “Bear Share” became a joke between me and my friends. It was like we made fun of one kid for using it instead of whatever we were using at the time. I don’t remember why but that’s all I remember about it. Makes me laugh now. Joking with one of our friends about what P2P client was the best.