UMUR "Psychedelic Grindcore" is the 2nd demo by Swedish death metal act Afflicted Convulsion. The demo was independently released on cassette tape in December 1989. It´s the successor to the February 1989 "Toxic Existence" demo and it´s a very different sounding release to the predecessor as "Psychedelic Grindcore" is an official rehearsal demo recorded live at Grottan Rehearsal Studios.

While "Toxic Existence" (1989) was an almost too polished (for a demo) release which didn´t suit the material that well, "Psychedelic Grindcore" is at the other end of the scale, being an extremely raw, muddy, and noisy recording. It´s pretty hard to hear details in the music, but it´s still audible that the band have taken major songwriting steps and have also honed their playing skills since the first demo. Some of the tracks from the demo would appear in re-recorded studio versions on the 1990 "Beyond Redemption" demo, where the band´s progression are better heard.

Rehearsal demos like "Psychedelic Grindcore" are mostly made for the band themselves, to hear raw drafts of their material, and they seldom provide much listening value for the fans. In that regard "Psychedelic Grindcore" is no different from most rehearsal demos and it´s not a pleasant listen on the ears. A 1.5 star (30%) rating is warranted.