Another area that caught my interest a few years ago was so-called "spiritual jazz" which is now very hot as a marketplace commodity-- it borders on free jazz, modal, post-bop and soul, often recorded on private or small independent labels, but the musicians are consummate players (most of them could not get work in the early ’70s once jazz was no longer a mainstream medium and worked largely as sidemen). There are some brilliant performances by some known (Cecil McBee) and unknown (Milt Ward) artists.
I also like heavy early rock, which has now been rebranded as proto-metal. It’s the stuff that coincides with early Sabbath, sometimes earlier, and anticipates heavy metal but doesn’t have shredded guitars (hate that with my carrots too) or Cookie Monster vocals. Leaf Hound’s Growers of Mushroom is probably the most famous. But there are many, many more-- bands you never heard of that had that Zepp-ish, Sabbathy, Purple-ish sound. Another famous one might be the German first pressing of Lucifier’s Friend- s/t.
I’ll listen to anything once. I’m not much for opera largely out of ignorance. I have a vast trove of high quality classical records that I rarely listen to these days, but every once in a while, I’ll pull one out.
Otherwise, it could be Eddie Hazel, or Cressida's Asylum. Go figure.