Suggest one obsure album we all should hear

Here are a few:
Michael Hurley and the Unholy Modal Rounders: "Have Moicy"
Tonio K:  "Life in the Foodchain"
Anouar Brahem:/ John Surman/Dave Holland: "Thimar"

Ian Anderson (yes, as in Jethro Tull) Divinities, twelve dances with God, instrumental masterpiece and very well produced in his basement in Scotland 

Robert Lucas - Luke and the Locomotives
Audioquest's foray into recording ('90s?).

Big Man Mambo - YouTube

I’m a big fan of Mr. Bungle, so when the guy at the record store pulled out this “rarity” out and put it on, I was sold.

New Music for Accordion - Mogens Ellegaard

https://www.discogs.com/Various-New-Music-For-Accordion/release/1318515
It is way, way out there. But wow, what a trip!