The musical instrument/tool I mean. The Art of Noise folks took the art just about as far as it could go in the 1980's with the very expensive Fairlight CMI, creatively mangling everything they could to great effect.
Here's a Roland S-700 from 1989, state of the art for the time as well but laughable nowadays. I was hooking up a mini Archos 605 as the screen for fun, it also had its own esoteric mouse. Check out the 14MB of expansion memory: