[tastysandwich]

Yep, the band is definitely called Sleep. https://en.wikipedia.org/wiki/Sleep_(band)

As other have pointed out, there's also a near-identical release called Dopesmoker, but it's all one long track so a bit less convenient.

They also have a 2018 release called The Sciences which is pretty damn good too.

Some other albums:

  - Antônio Carlos Jobim - Wave (bossa nova is one of the most underrated genres I reckon)
  - Jon Hopkins - Singularity (ambient electronic)
  - Electric Wizard - Dopethrone (doom metal. similar to Sleep)
  - Sigur Rós - Ágætis_byrjun (there are vocals but they're Icelandic)
  - Chopin - The Complete Nocturnes (I've got a double-album of Roger Woodward playing them)
  - J Dilla - Donuts (instrumental hip hop)

I've tried to cover as many genres as possible to pique people's interest in branching out (you'd be surprised by what you enjoy when you give it a chance). Happy to give even more recommendations - I'm a music nut haha.