Suggest one obsure album we all should hear

The first (self-titled} Seatrain album. Still love it.

obscure may be the wrong word, it is a new album from a new artist

matt carmichael - where will the river flow

beautiful lyrical jazz, great sound quality

in addition to the absolutely lovely music, it is an excellent test of truth of timbre of a hifi rig

Rick Margitza - Hope
Bob Berg - Back Roads
Dan Siegel - Hemispheres
Randy Roos - Primalvision

Obscure, you say?
Here's a good intro to Harry Partch, a brilliant iconoclastic composer who designed and built his own instruments and employs a microtonic (43-tone) scale:

Music of Harry Partch, Vol. 3: Sonata Dementia 
or
The Harry Partch Collection, Vols. 1-5
by Gate 5 Ensemble

Bring on the Night, Sting