Parallel dreams perhaps.
I have always wanted a Fairlight so as to try and SEE the sound by connecting it to some scanners. I even got an old Hammond B3 and rewired it a bit to see some "harmonic" lissajous figures.
My first laser controllers started life as synthesisers.
I also managed to get really hypnotic laser shows by "rerecording" the tapes from an old "melotron" with suitable sine/cosine wave forms and feeding the signals simultaneously to both speakers and scanners. The percussion part gets very complicated since one has to translate the rythm into a kind of z axis event tunnel (Dr Who style).
It all came to an abrupt end when the opportunity to make a "true stereo" sampler was passed over by the musical instrument manufacturers. By true stereo I mean the capability of generating both sine and cosine versions of ALL the signals available and mixing them for both image and sound.
Best of luck trying to find your fairlight it was a truly stunning sound machine.
If you could get a service manual with it I would really like a copy!
Cheers L