This was recorded on a lovely big Yamaha keyboard which we borrowed from a mail order catalogue company. The trick was to order top notch musical equipment, record as many songs as we could with it, then return it (postage free) within the allocated time before it was charged to our wives catalogue accounts. It worked every time - despite once accidently blowing-up the transformer for a Korg Trinity. The return slips were always quite bizarre. (You have to remember we were dealing with people more used to selling sports gear and cheap sofas.) Reason for return: "I'm a bit disappointed with the low range frequencies around the cusp of the flange." That kind of thing. Nobody got hurt.