Just a 'funny' note: I was watching a horrible old movie called "The Werewolf Of Washington" a couple days ago, hosted by Elvira (Elvira's Movie Macabre) and starring Dean Stockwell.
About 1/2 way through the film there was a scene with a lady composer in her home studio. She was playing a sad little song...on her Poly 800!!! I had to pause the film to be sure, but it was definitely an 800. Cool! First film ever that I've seen one in.