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.
I also found this one: http://flacmusicfinder.com/
It only has links to files uploaded by many users, so your mileage may vary. But I have gotten a real FLAC from there (checked in Aspect Pro), though I only tried it once because I couldn’t find some song on the aforementioned site.