Awesome story, thanks! Lucky for him that he lived nearby -- funny how they just accepted his trial take as the "master". Brian probably looked down from heaven on that autoharp with a smile on his face.
Listening to the evolution of "Creation" from demo through rough mix to LP release it appears Mr Traum is right. Both the acoustic guitar and that harpsichord remain the same throughout all versions...they did soup the harp up with stereo delay effects on the final...