Don Taylor Posted January 30, 2015 Share Posted January 30, 2015 There is a 49 key Jeffries duet up for auction on eBay and there are some nice pictures of its ends: http://www.ebay.com/itm/261752151748?_trksid=p2060778.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT Looking at these pictures I can see how Brian Hayden got the idea for his button layout for the Hayden system. It would be very straightforward to map a useful version of the Hayden system onto the existing buttons on this box. Quote Link to comment Share on other sites More sharing options...
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