I remember seeing this on the Engineer Bill show in Los Angeles ca. 1963. I also remember Cordic & Company from KNX radio Los Angeles in 1965 - had no idea the two were related or that this was originally a children's record or that Regis Cordic virtually invented the "morning team" radio format...
Great video! I have an Audograph Keynoter I'm restoring - very interesting machines. I first saw one 1964 at a friend's house and made a recording which I still have. It's taken me until now to identify what this machine was and ultimately acquire one on eBay. Hope to post a video of my own soon.
@sirmoog It's 'El Cumbanchero'.