Unmelodic music - Ukashan experiments
Back in the 2000s, The Future Sound of London published the experimental album The San Montana Tapes under the pseudonym Heads of Agreement . Their experiment tries to questions the basic definition of western music. [It is] described by them as "Experiments in polyrhythmic" . It is described as very unmelodic with sparse percussion loops [...] They had been offering free 192kbps MP3 downloads for years. Unfortunately, the original link went broken recently. You can still sample one of the tracks from the archive if you are curious. It still seems to be available for sale in studio quality in case it fits your taste.