I had a TX81Z and an FB01. The TX81Z was midied to early arrangers, like Technics KN800. The FB01 was midied to DX7, and later a V50. An Alesis drum machine was also in the midi line. And I used a Yamaha processor for pitch shift, sort of a do-it-yourself vocal harmonizer. Also used a pedal phase shifter for pseudo leslie effect. Of course this called for a really big mixer, a couple of effects units, graphic equalizer, BBE, compressor/limiter, etc.
Today, we can get all this for $1500. in a 25-pound package!
Ain't life GREAT!?
DonM