Most of the discussion and sources of content talk about movies and series.
I've been recently looking for psy and techno music, finding FLAC or WAV with active seeders feels like striking gold. It's definitely been a while since I've looked for active torrent sites and it feels more barren than ever.
Edit: Thank you all for all that valuable information. The reddit group really wasn't this helpful and valued making fun over adding real use able knowledge.
Personally, I tend to only pirate music files that I just can't find anywhere else. For example, audiophile quality 45rpm vinyl rips of albums that might have only been sold in that format once, and for a very limited run. In cases like that, I almost feel a responsibility to maintain a copy because it is something that could very easily disappear from existence.
The guys doing the rips understand that they might own one of maybe a few hundred copies of a certain album, so they rip at audiophile quality and share.