This is a demo of the Electronic Music Works Patch Synthesizer JX-810P, a patch generator for the the Roland JX-8P and MKS-70.
Here’s what EMW has to say about the Patch Synthesizer:
Our Patch Synthesizer is not just a patch randomizer, it uses an intelligent algorithm to create very usable sounds and has adjustable parameters to allow you to control the type of patch that will be created. Rediscover your synth with the EMW Patch Synthesizer series.
Electronic Music Works offers a variety of Patch Synthesizers, including ones for the Roland Alpha Junos and the Yamaha TX81Z / DX11. See the company site for details.