David Bowie's Facebook page recently turned up some weird, retro covers of Starman, Moonage Daydream, and Soul Love. The songs, by Milky Edwards & The Chamberlings most likely "never really existed”, according to Bowie's page, having only cropped up on Youtube quite recently.
The music, however, is great, no matter how you slice it. To be fair, there is a lot of forgotten soul music out there, and this does sound like it could quite easily be authentic. Which makes it a lot more fun. It also does kinda sound like DB singing himself occasionally. Wherever it originated, it's worth a listen.