Ian WIlliam Craig has half a dozen pay-what-you-like albums. I haven’t got through them all yet, but I possibly prefer Zugzwang for Fostex to his three more generally accessible albums:
“Recorded, performed and mixed by IWC entirely on a customised Fostex X-15 as it slowly died because of having customised it. All sounds created using analogue tape, manipulated and circuit-bent tape recorders, a swag spring reverb, the Craig piano, sandpaper, the Reminsky Fatso and IWC’s voice. No digital anythings were employed in the creation of this recording because who knows how any of that stuff works anyways.”