[quote=
I originally asked if it was a Kurweil, but then edited my post to read Roland. That's because his header asks if TOTL ARRANGERS are really advanced, not TOTL WORKSTATIONS. As far as I know, Kurzweil did not make any arrangers 28 years ago.

I was also thinking that perhaps the Classical demo was from Technics. [/quote]

Arrangers at that time were never as advanced in sounds as the ground-breaking sample-based synthesizers like M1. Otherwise Yamaha could have dumped their FM-based Electone organs very quickly... I still have some cassette recordings of my Electone and later Electone + SY-55 from that time... That's why I thought a synth has to be involved here.