This interesting music/typewriter themed display was in one of the rotating display windows near a theater in Tacoma a little while ago. (not sure if they are associated) I'm going to guess that they didn't type all of this sheet music on the Corona.
This futuristic Durez plastic typewriter is just funny. Look at the keyboard! Sorry I couldn't find better resolution, but this was the only scan of it I could find. You can buy it, on eBay, if you wanted. It's overpriced though. XD