Interesting historical piece - anyone have a Matrix H decoder? No mention of what's on it, tho knowing the Beeb it's probably a live recording of Pirates of Penzance
http://cgi.ebay.com/BBC-RADIO-PRESE...dZViewItemQQptZUK_Records?hash=item35a602e40f
http://cgi.ebay.com/BBC-RADIO-PRESE...dZViewItemQQptZUK_Records?hash=item35a602e40f