There's a degree of UI design overlap between the CS-80 and Yamaha's electronic organs of the same period, and it's interesting to think about how this pays off for the CS-80.
One of the defining characteristics of an organ is that the sound of the note tends not to change over time and the keys are essentially just on/off switches. Hence, any kind of articulation you want to get into the sound has to be done by working the controls while you're playing.
You then take a synth which is vastly more receptive to having its sound reshaped in real time, and design a UI for it that encourages this, you get a synth that we're still talking about (and struggling to replicate) 45 years later.
One of the defining characteristics of an organ is that the sound of the note tends not to change over time and the keys are essentially just on/off switches. Hence, any kind of articulation you want to get into the sound has to be done by working the controls while you're playing.
You then take a synth which is vastly more receptive to having its sound reshaped in real time, and design a UI for it that encourages this, you get a synth that we're still talking about (and struggling to replicate) 45 years later.