Found this browsing Wikipedia, in the entry for Paul Nicholas:
It was while touring with Richard O'Brien in Hair in 1970 that he first heard songs from the yet to be produced Rocky Horror Show and made the first professional recording with O'Brien singing "That Ain't No Crime". On the B-side was a song entitled "Very 50s", where O'Brien introduces the characters Brad, Janet, and Dr. Scott (In 2005 Nicholas sent O'Brien a CD copy of the recordings with a view to releasing them as an historical record).
So, whatever happened to this???