Suggest one obsure album we all should hear

As requested by the OP, I will only list one even so I have at least a good dozen that would beat the pants off the likes of Fleetwood Mac Rumors and Steely Dan Aja as far as audiophile quality goes.
Kevin Ayers- Diamond jack and the queen of pain.

Looks like Kevin Ayers is getting quite a bit of love. 
Try Deia vu if you can find it, another sublime album by him, music and incredible sound.