That was the one I meant. His first album. I got the year wrong! The second album, also just called David Bowie, was released in 1969.

Aah, the old David Bowie demo hidden in the bread basket trick. Sounds like something out of Get Smart.

Well, maybe I'm a bit gullible. If the demo's a fake, no rich collector will be fooled, as it's possible to use technology to distinguish between someone's real voice and even a very good impersonator.
If it's fake, I guess some people have too much time on their hands and nothing better to do!