Nathan Jay, a british producer/composer/writer and DJ, took MJ's voice from various acapellas and processed it in order to create a "new song".
From the author:
Part of a music/video project I'm currently working on. FAQs: 1) Yes, it is Michael Jackson's voice. 2) Yes I hope to upload the full version when it's finished. 3) The vocals are from various MJ acapellas 4) The "effects" on the voice are not something I can control. It's a by-product of the retuning of Michael's voice. 5) The final version will be ready in two or three months. I won't be uploading any more previews/snippets.